Should I replace my furnace and AC at the same time in Katy, TX?

Replace both together when both units are 10+ years old, when the surviving unit can't be AHRI-matched to a modern high-efficiency partner, or when a new R-454B condenser would be paired with an old R-410A coil. Doing both in one job saves about $1,500 to $3,000 in labor through a shared line set, disconnect, permit, and commissioning. Keep one only if it is genuinely newer than about 8 years and compatible.

My old furnace still works but my AC died. Will a new high-efficiency AC be dragged down if I keep the old furnace?

Often, yes. A high-efficiency condenser only reaches its rated SEER2 when it is matched to a compatible indoor coil and blower. An old, undersized, or single-speed furnace blower can hold the new system 10% to 15% below its rated efficiency and can disqualify the AHRI match your warranty and CenterPoint rebate depend on. If the furnace is under about 8 years old and compatible, keeping it can work. We confirm the match before recommending either path.

Should I get a heat pump, a gas furnace and AC, or a dual-fuel system for my Katy home?

For Katy's seven-month cooling season and mild winter, a heat pump is the efficiency winner and earns a larger CenterPoint rebate ($500 to $750 versus $300 to $450). A gas furnace plus AC is the lowest upfront cost where a gas line exists and keeps heating independent of the power grid. A dual-fuel hybrid runs the heat pump for efficiency, then switches to gas below about 35°F, which many Katy homeowners chose after Winter Storm Uri and Hurricane Beryl. We compare all three on your estimate.

How much does a complete HVAC system installation cost in Katy, TX in 2026?

A complete system runs $9,000 to $25,000+ installed. A 96% AFUE gas furnace with a 16 SEER2 AC runs $11,500 to $17,000 for most Katy homes. An all-electric heat pump runs $12,000 to $22,000, and a dual-fuel hybrid adds $3,000 to $6,000 over the heat-pump base. Ranges include equipment, labor, line set, disconnect, refrigerant, ductwork inspection, and permit. 2026 R-454B and R-32 systems carry a 15% to 30% premium over 2024 R-410A pricing.

Do I need new ductwork when I replace my whole HVAC system?

Not always. We run a Manual D check and a static-pressure test first. You can reuse ducts that are properly sized, sealed, and leaking under about 15%. Plan to seal or replace them when leakage tops 25% to 35%, returns are undersized, or 1990s flex duct has sagged in a hot attic, which is common in pre-2005 Kelliwood and Bear Creek homes. A new system on leaky ducts wastes 20% to 30% of its efficiency.

Why can't I just swap the outdoor AC unit and keep my old indoor coil or furnace?

Three real reasons. First, a high-efficiency outdoor unit needs an AHRI-matched indoor coil to hit its rated SEER2 and keep its warranty. Second, a 2025+ outdoor unit uses R-454B or R-32, which cannot be charged into an old R-410A coil. Third, if both are 10+ years old, replacing one alone spends good money on aging equipment. A swap can work only if the indoor side is genuinely newer and can be matched. We verify the match before quoting.

What size should my new HVAC system be, and can it be oversized?

The size comes from an ACCA Manual J load calculation, not square footage. Yes, a system can be oversized, and in Katy's 74.7% humidity that is a real problem: an oversized system short-cycles, cools fast, then shuts off before removing enough moisture, leaving the house cold and clammy with humidity above 55%. We see this often in builder-grade Elyson and Cane Island homes. The fix is a right-sized, variable-speed system that runs longer at lower capacity.

Are there rebates or a federal tax credit for a new HVAC system in Katy in 2026?

The active rebate is the CenterPoint Energy Standard Offer Program: $300 to $450 on a qualifying AC, $500 to $750 on a heat pump, and $75 on a smart thermostat, up to $825 combined. The system must be AHRI-matched and ENERGY STAR certified. The federal Section 25C tax credit expired December 31, 2025, and the 30% credit survives for geothermal only, not air-source heat pumps. Texas's HEAR program is funded but has not opened applications.

An HVAC company won't replace my AC unless I also replace my good gas furnace. Is that necessary or an upsell?

It can be legitimate for three reasons: AHRI matching (a high-efficiency variable-speed condenser must pair with a matching air handler to hit its rated SEER2 and warranty), refrigerant (a new R-454B condenser can't match an old R-410A coil), and age (if both are 10+ years old, replacing one is throwing good money at old equipment). It is not necessary if your furnace is genuinely under about 7 years, in good shape, and matchable. Red flags of an upsell: no itemized estimate, no AHRI match explanation, no Manual J. Get a second opinion.

Do you install complete HVAC systems in Cinco Ranch, Elyson, Cane Island, Firethorne, and Cross Creek Ranch, and do you pull the permit?

Yes. We install complete systems across all of Katy, including Cinco Ranch (77450/77494), Elyson and Cane Island (77493), Firethorne (77494), and Cross Creek Ranch (77441/77494). Because Katy spans Harris, Fort Bend, and Waller counties, the permit office depends on your address. We pull the correct mechanical permit for your jurisdiction (City of Katy, Harris County, Fort Bend County, or Waller County) and schedule the final inspection, included in the install.

HVAC Installation in Katy, TX: Complete Furnace, AC & Heat Pump Systems, One Installer

Looking for dependable HVAC services in Katy, TX? 75 Degree AC delivers expert air conditioning, heating, and indoor air quality solutions for homes and businesses, helping you stay comfortable in every season.

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HVAC Installation in Katy, TX

75 Degree AC installs complete HVAC systems across Katy, TX (ZIP codes 77449, 77450, 77493, and 77494, spanning Harris, Fort Bend, and Waller counties), serving the area from its Houston headquarters. Whole-system replacement options: a gas furnace plus matched AC ($11,500–$22,000 installed), an all-electric heat pump replacing both units ($12,000–$22,000), or a dual-fuel hybrid ($14,000–$22,000+). All 2026 systems use R-454B or R-32 refrigerant, about 15–30% more than older R-410A equipment. Texas requires a minimum 14.3 SEER2 on new air conditioners and 8.8 HSPF2 on new heat pumps; 16+ SEER2 is recommended for Katy’s 102 days a year above 90°F. CenterPoint Energy rebates run $300–$750 by efficiency tier plus $75 for a smart thermostat; the federal 25C credit expired December 31, 2025. Every installation starts with an ACCA Manual J load calculation and an AHRI-certified matched pair. Licensed TACLA72152E (Class A). Free estimates. Call (713) 598-2737.

When one half of your system quits in a Katy August, you face a five-figure decision most people make once a decade: replace just the broken unit, or put in a complete matched system that handles both heating and cooling. We install the whole comfort system, the furnace or heat pump, the AC, the ductwork, and the thermostat, in one job sized by Manual J and matched to AHRI spec. Whether you own an aging gas system in Cinco Ranch or a builder-grade all-electric setup in Elyson, you get the three system options laid out in plain Katy numbers before you spend anything.

TACLA72152E (Class A, covers heating and cooling) · Serves all of Katy from our Houston west-side dispatch · AHRI-matched systems with the certificate handed to you · Free in-home Manual J estimate · Financing through multiple lenders

Last updated: June 2026 · Call (713) 598-2737 for a free Katy system estimate.

What a Complete HVAC System Installation Costs in Katy, TX (2026)

A complete HVAC system installation in Katy runs $9,000 to $25,000+ installed, depending on system type, home size, and efficiency tier. Most Katy homes land between $11,500 and $18,000 for a standard 96% AFUE gas furnace matched to a 16 SEER2 AC. Heat pump and dual-fuel systems sit higher because they replace more equipment. Three system types, three price bands. The table below sorts out which one fits which Katy home.

75 Degree AC installs complete HVAC systems in Katy, TX: gas furnace + matched AC ($11,500–$22,000), all-electric heat pump ($12,000–$22,000), or dual-fuel hybrid ($14,000–$22,000+). Serving ZIPs 77449, 77450, 77493, 77494 across three counties. Manual J sizing, AHRI-matched. TACLA72152E. Call (713) 598-2737.

System type	Installed cost (Katy)	Best for
Gas furnace + matched AC (96% AFUE / 16+ SEER2)	$11,500–$17,000	Homes with an existing gas line; lowest upfront for full comfort
All-electric heat pump (17+ SEER2 / 9.5+ HSPF2)	$12,000–$22,000	All-electric Elyson and Cane Island homes; mild Katy winters
Dual-fuel hybrid (heat pump + gas backup)	$14,000–$22,000+	Efficiency plus hard-freeze (Uri) and outage (Beryl) insurance

Most Katy whole-system installs land between $13,000 and $18,000 for a standard 96% AFUE plus SEER2 16 matched system, which tracks the Angi 2026 national average of roughly $13,430 for a 2,000 to 2,500 sq ft home.

What the price includes. A real whole-system quote covers the equipment, labor, a new line set where required, the electrical disconnect, the refrigerant charge, a ductwork inspection, old-system removal, and the permit fee. We itemize each line so you see exactly what you are buying.

What moves the number. Tonnage (a 5-ton system costs more than a 2.5-ton), efficiency tier (a variable-speed 18+ SEER2 unit can add $4,000 to $7,000 over a single-stage 14.3), single-stage versus modulating equipment, and ductwork condition all push the figure up or down. R-454B and R-32 systems carry a 15% to 30% premium over comparable 2024 R-410A equipment because of the EPA AIM Act refrigerant transition.

Ductwork adds $3,000 to $8,000 when leakage tops 30% or returns are undersized, which is common in pre-2005 Kelliwood and Bear Creek homes. A CenterPoint rebate of $300 to $750 comes off the back end on qualifying high-efficiency systems (full tiers below).

If a quote arrives without a Manual J calculation and a line-by-line breakdown, that is the trust killer behind the $9,000-to-$30,000 spread homeowners see across three bids. We put repair versus full-changeout costs side by side, in writing, before any work starts. Call (713) 598-2737 for an itemized estimate.

Should You Replace Your Furnace and AC at the Same Time?

Replace both at once when both units are 10+ years old, when the surviving unit can’t be AHRI-matched to a modern high-efficiency partner, or when the new outdoor unit uses R-454B and your old indoor coil is R-410A. Replace one when the other is genuinely newer than about 8 years, in good condition, and compatible with the new equipment. The deciding factor is matched efficiency and warranty, not pressure.

The math usually favors replacing together once a system passes its 12th year. Bundling the furnace and AC into one job saves roughly $1,500 to $3,000 in labor versus two separate visits, because the crew shares one access, one line set, one disconnect, one permit, and one commissioning. A new high-efficiency condenser also can’t reach its rated SEER2 if it pulls air across an aging, mismatched coil or an undersized old furnace blower, so a “save money, keep the old half” plan often loses 10% to 15% of the efficiency you just paid for.

That said, we don’t earn more by steering you to the bigger ticket. If your furnace is five years old and your AC died, we’ll tell you the AC can stand alone and point you to a cooling-only AC installation. If the failed part is cheap and the system has years left, we’ll show you why it makes sense to repair your existing system instead. When the real question is whether a tired 15-year-old system is worth keeping at all, that is a replacement-decision conversation, and we walk through the swap-or-keep logic with you directly. We also give a free second opinion on any competitor’s whole-system quote.

Call (713) 598-2737 and we’ll run the replace-together math for your exact home.

Heat Pump, Gas Furnace, or Dual-Fuel: Which Fits Your Katy Home?

Katy homeowners choose among three configurations. A 96% AFUE gas furnace plus a 16+ SEER2 AC is the most common setup and the lowest upfront for homes with an existing gas line. An all-electric heat pump replaces both units with one outdoor system and earns the larger CenterPoint rebate. A dual-fuel hybrid pairs a heat pump with a gas furnace backup for the rare hard freeze. The table sorts them by what actually matters here: upfront cost, summer efficiency, rebate, and what happens when the power goes out in a freeze.

Configuration	Installed cost	Katy climate fit	CenterPoint rebate	Hard-freeze backup
Gas furnace + matched AC	$11,500–$17,000	Strong where a gas line exists; furnace shrugs off rare freezes	$300–$450 (AC tier)	Gas furnace, independent of the power grid
All-electric heat pump	$12,000–$22,000	Excellent for the 7-month cooling season and mild winters	$500–$750 (heat-pump tier)	Electric heat strips, grid-dependent
Dual-fuel hybrid	$14,000–$22,000+	Heat pump efficiency most of the year, gas below about 35°F	$500–$750 (heat-pump tier)	Gas furnace auto-switch, the Uri/Beryl hedge

The heat pump wins the math for Katy's seven-month cooling season and short, mild winter, and it qualifies for $500 to $750 from CenterPoint versus $300 to $450 for an AC. The catch is resilience: an all-electric system leans on electric heat strips and the grid during a sustained freeze, which is exactly what stung Katy homeowners during Winter Storm Uri in February 2021 and the multi-day Hurricane Beryl outage in July 2024. A dual-fuel system runs the heat pump for efficiency most of the year, then switches automatically to the gas furnace below its balance point near 35°F, so you keep heat when the power and the temperature both drop.

Every system we install is a matched split system, meaning the outdoor unit, the indoor coil or air handler, and the furnace are certified together by AHRI. We hand you the AHRI certificate at job close, because that document is what proves your rated efficiency, qualifies your CenterPoint rebate, and protects your manufacturer warranty. A mismatched coil is the single most common reason a new system underperforms and a warranty claim gets denied. Call (713) 598-2737 and we'll compare installed cost, operating cost, and net-after-rebate for all three.

How We Size and Install Your System, Step by Step

Manual J load calculation

We measure your home's heating load (at Katy's ~26°F winter design temperature) and cooling load (at ~99°F summer design), accounting for orientation, insulation, window area, and ceiling height. This sets the right tonnage and furnace BTU. Anyone quoting without it is guessing.

Manual D duct check and static-pressure test

We confirm your existing ductwork can carry the new airflow. Katy attics hit 130°F to 140°F in summer, and 25% to 35% leakage is common in pre-2010 flex duct. A new system on leaky ducts wastes 20% to 30% of what you paid for.

Manual S equipment match

We select the furnace or heat pump and the condenser as an AHRI-certified pair, then pull the matching AHRI certificate number.

Schedule and permit pull

We file the correct mechanical permit for your exact Katy jurisdiction (the permit table below shows which office by ZIP) and book the install.

Install day

A standard split-system changeout takes 6 to 8 hours and finishes same-day. Adding ductwork extends it to one or two days. We never leave a Katy home without cooling overnight in summer.

Commissioning, sign-off, and handover

We verify the refrigerant charge and airflow, schedule the final inspection, hand you the AHRI certificate, register both units for the full warranty, and help you confirm which CenterPoint incentives apply to your address.

HVAC Brands and Models We Install: Furnaces, Heat Pumps, AC

We install all major brands as matched systems, covering the furnace, the heat pump, and the AC from one manufacturer so the AHRI certificate and warranty hold. The table below pairs the heating and cooling sides of each brand we carry.

Brand	Gas furnace	Heat pump	AC	Top efficiency
Carrier	Infinity 59MN7	Infinity 24VNA	Infinity 24ANB7	up to 98.5% AFUE / 26 SEER2 / 10+ HSPF2
Trane	S9V2	XV20i	XV20i	up to 97% AFUE / 20+ SEER2
Lennox	SLP99V	SL25XPV	SL28XCV	up to 99% AFUE / 28 SEER2
Goodman	GMVC96	(matched HP)	GSXC18	96% AFUE / 18 SEER2 (value tier)
Daikin	DM96VC	DZ20VC	DX20VC Fit	R-32; 23.5 SEER2

Carrier, Trane, and Lennox systems use R-454B (Carrier markets it as Puron Advance); Daikin uses R-32. Both are A2L refrigerants that require EPA 608 Universal certification to handle, which every one of our installers holds. Goodman, owned by the same parent as Daikin, is our value tier for budget-conscious Kelliwood and Bear Creek replacements, while Carrier Infinity and Lennox Signature suit the premium variable-speed installs common in Cane Island and Firethorne.

One thing most Katy quotes skip: in this climate, the variable-speed compressor and ECM blower matter more than the brand badge. Katy's 74.7% average humidity means dehumidification, not raw cooling, is what makes a house feel right, and a modulating system that runs long and low at 70% capacity pulls far more moisture than a single-stage unit that blasts and shuts off. We size the stage to the home, not the showroom.

One honesty note on price-shopping: a cheap bid in 2026 may be quoting phased-out R-410A inventory. Under the EPA's amended rule effective July 27, 2026, contractors can still install pre-2025 R-410A stock until it is depleted, so some low bids are older equipment whose refrigerant gets more expensive to service every year as production falls to about 15% of today's output by 2036. On every quote we specify the refrigerant and whether the equipment is new 2025+ or pre-2025 inventory. Call (713) 598-2737 to spec your matched system.

SEER2, AFUE, and HSPF2 Explained for Katy's Climate

SEER2 rates cooling efficiency, AFUE rates gas-furnace heating, and HSPF2 rates heat-pump heating. Texas (the DOE South region) requires a minimum 14.3 SEER2 on new split air conditioners and 8.8 HSPF2 on new heat pumps, with no federal AFUE minimum at all. For Katy’s load we recommend 16+ SEER2, 96%+ AFUE, and 9.5+ HSPF2. Two of those numbers earn their keep in Katy. One mostly does not.

In the DOE South region, new air conditioners must meet 14.3 SEER2 and heat pumps 8.8 HSPF2 (10 CFR 430). There is no federal AFUE minimum in Texas, so an 80% furnace is fully legal to install. For Katy’s 102 days a year at or above 90°F, the cooling number does the heavy lifting: moving from a 14.3 to a 17+ SEER2 system cuts your summer power bill across a long cooling season that runs roughly seven months.

The AFUE story is where Katy buyers get pushed hardest, so let me lay it out straight. You may have heard a federal rule will require 95% AFUE on all new gas furnaces. That rule was finalized in 2023 with a December 18, 2028 effective date, but it is in legal limbo. The D.C. Circuit upheld it in November 2025, the Supreme Court vacated that ruling and sent the case back in June 2026, and the Department of Energy has signaled it may rewrite or delay the rule to 2030. In its April 2026 brief the Solicitor General stated the government considers the rules “factually and legally flawed.” For now, 80% AFUE furnaces remain fully legal in Texas. We will not use an unsettled federal timeline to push you into a costlier furnace.

The reason we still recommend 96% AFUE on most whole-system installs is comfort, not the gas bill. In Katy’s mild winter (about 1,484 heating degree days), upgrading from 80% to 96% saves only $80 to $160 a year, a 12-to-20-year payback on the $1,000-to-$3,000 premium. The real value of a 96% furnace here is the variable-speed ECM blower that improves summer humidity control. On the heat-pump side, the difference between 8.8 and a 10+ HSPF2 unit is only about $50 to $150 a year in our short heating season, so we choose variable-speed for the same moisture-removal reason, not the heating math.

Do You Need New Ductwork With a New System?

Sometimes. Reuse your existing ductwork when a Manual D check and a static-pressure test confirm it’s sized correctly and leaking under about 15%. Replace or repair it when leakage tops 25%, when returns are undersized, or when flex duct has sagged and crushed in a hot attic. A new high-efficiency system on bad ducts loses 20% to 30% of the efficiency you paid for, so we test before we promise a SEER2 number.

Reuse the ducts if they are properly sized, sealed, and under roughly 15% leakage, which is common in well-built 2010+ homes in Elyson and Cane Island.
Seal the ducts (Aeroseal cuts leakage 70% to 90%) when joints have separated but the runs and sizing are sound.
Replace the ducts when leakage exceeds 25% to 35%, returns are undersized, or 1990s flex duct has degraded, which we see regularly in pre-2005 Kelliwood, Bear Creek, and older Cinco Ranch homes.

Katy attics reach 130°F to 140°F in summer, which bakes old flex duct and accelerates sagging and disconnection at the boots. We run a static-pressure test in every whole-system estimate so you know whether your ducts can carry the new airflow before you commit to the equipment, not after.

Financing and CenterPoint Rebates for Your New System

Two financial levers bring a Katy system within reach: financing and the CenterPoint Energy rebate. There is no 2026 federal HVAC tax credit for air-source equipment, so be wary of any contractor who promises one.

Financing through multiple lenders spreads the cost over the life of the system, with low-interest options for qualifying buyers.
CenterPoint Standard Offer Program rebates: $300 for a central AC at SEER2 16+, $450 at 17+; $500 for a heat pump at 16+, $750 at 17+; plus $75 for a qualifying ENERGY STAR smart thermostat. A 17+ heat pump with a smart thermostat can earn up to $825 combined.
AHRI match plus ENERGY STAR certification are required for any rebate tier, which is one more reason we hand you the certificate.
We include rebate-eligible equipment options in every quote and help you confirm which incentives apply to your address.

Is there a 2026 federal tax credit? No. The federal Section 25C tax credit expired December 31, 2025, and cannot be claimed on 2026 installs. The 30% credit survives for geothermal systems only (25D), not air-source heat pumps. Texas’s HEAR rebate program is funded but has not opened applications. CenterPoint SOP is the only confirmed active rebate for Katy in June 2026.

Worth flagging because it costs homeowners money: all four Katy ZIPs (77449, 77450, 77493, 77494) are CenterPoint Energy territory. Several comparison sites name the wrong utility for Katy (Oncor, CPS, or Austin Energy), which sends people chasing rebates they can’t claim. Katy is CenterPoint, for both gas and electric. Call (713) 598-2737 and we’ll map your eligible rebates to the system you choose.

What Size HVAC System Does My Katy Home Need?

The right size comes from an ACCA Manual J load calculation, not a square-footage rule of thumb. Manual J measures your home's actual heating and cooling load using Katy design conditions (about 99°F summer, 26°F winter, 74.7% humidity), then sets the tonnage and furnace BTU. Oversizing is the more common mistake here, and it backfires in Katy's humidity.

An oversized system short-cycles: it cools the air to temperature fast, then shuts off before it has run long enough to pull moisture out. The result is a house that feels cold and clammy at the same time, with relative humidity stuck above 55%. We see this constantly in builder-grade systems in Elyson and Cane Island, where developers spec a generic tonnage rather than calculate the load. The fix is a correctly sized, variable-speed system that runs longer at lower capacity.

The table below is our starting-point reference for Katy homes. It's a guide, not a quote: the real size always comes from a Manual J on your specific home, because two 2,500 sq ft houses with different insulation, window area, and orientation can need different tonnage.

Katy, TX HVAC System Sizing & Selection Reference Table (ACCA Manual J inputs for the Houston-Galveston/Katy climate)

Conditioned home size	Typical tonnage	Approx. cooling load	Recommended SEER2 / AFUE / HSPF2	Dual-fuel suitability
1,200–1,600 sq ft	2–2.5 ton	24,000–30,000 BTU	16 SEER2 / 96% AFUE / 8.8+ HSPF2	Optional
1,600–2,200 sq ft	2.5–3 ton	30,000–36,000 BTU	16+ SEER2 / 96% AFUE / 9.0+ HSPF2	Good
2,200–2,800 sq ft	3–3.5 ton	36,000–42,000 BTU	16–17 SEER2 / 96% AFUE / 9.5+ HSPF2	Strong
2,800–3,500 sq ft	3.5–4 ton	42,000–48,000 BTU	17+ SEER2 / 96–98% AFUE / 9.5+ HSPF2	Strong
3,500–4,500 sq ft	4–5 ton	48,000–60,000 BTU	17+ SEER2 / 98% AFUE / 10+ HSPF2	Excellent

The takeaway: if a contractor quotes a tonnage off your address without measuring the load, ask for the Manual J. We show you ours.

Which Katy Neighborhoods and ZIPs Do You Serve?

We install complete HVAC systems across all of Katy, which spans three counties, with our crews dispatched from the Houston west side. System age varies sharply by neighborhood, so we tailor the recommendation to your home’s vintage.

Cinco Ranch (77450 / 77494): Katy’s largest master-planned community, 1990s to 2010s; the biggest replacement cohort right now, with many original matched systems past 15 years.
Kelliwood (77450): 1990s to 2000s; aging single-stage systems, some still on R-22-era equipment, prime candidates for a full matched changeout.
Elyson (77493): 2016 and newer; builder-grade, often all-electric heat pumps hitting their first replacement cycle and showing oversizing and humidity complaints.
Cane Island (77493): 2016 and newer new builds; strong dual-fuel and heat-pump territory.
Firethorne (77494): 2010s, mid-to-premium homes; variable-speed and modulating systems.
Cross Creek Ranch (77441 / 77494): newer Fulshear/Katy edge homes; heat pump and dual-fuel.
Bear Creek (77449): Katy’s highest-population ZIP, older mixed stock with frequent duct issues.
Grand Lakes, Seven Meadows, and Jordan Ranch (77494 / 77450): 2000s to 2010s.

{{OPS, Anti-doorway Flag B ship-blocker: insert 2 to 3 real Katy whole-system install testimonials here, attributed to Cinco Ranch / Elyson / Cane Island / Kelliwood. Do not publish with stock or non-Katy reviews.}}

Do You Pull the Permit for a Katy System Replacement?

Yes. A whole-system replacement, and any job that relocates equipment, changes the fuel source (gas furnace to heat pump), or adds ductwork, always triggers a mechanical permit. Because Katy spans three counties, the right office depends on your exact address. We pull the correct permit for your jurisdiction and schedule the final inspection, both included in the install.

Jurisdiction	Covers (by ZIP)	Office	Phone
City of Katy	Inside city limits, 77493	901 Avenue C, Katy TX 77493	(281) 391-4830
Harris County OCE	Unincorporated 77449, parts of 77450	Harris County Office of the County Engineer	(713) 274-3232
Fort Bend County Engineering	Most of 77494, FB parts of 77450	301 Jackson St, Richmond TX	(281) 633-7500
Waller County	NW Katy fringe of 77493	836 Austin St, Hempstead TX 77445	(979) 826-7600

This matters beyond code compliance: unpermitted HVAC work is a material defect that buyers' inspectors flag in Fort Bend and Harris County real-estate transactions, which can stall or kill a home sale. A dual-fuel install adds gas-piping work that must meet NFPA 54, and newer Katy homes with CSST gas line require proper bonding. We handle all of it.

Why Katy Homeowners Choose 75 Degree AC

Class A license TACLA72152E, not Class B

Our license carries no tonnage ceiling and covers both heating and cooling. Some Katy competitors hold Class B (capped at 25 tons). Verify any contractor's TACL number in 30 seconds at tdlr.texas.gov/LicenseSearch before you sign.

We serve Katy from the Houston west side, since 2016

We have worked Katy gate codes, HOAs, and all three counties' permit offices across nearly a decade, from Cinco Ranch to Elyson. A Houston address does not mean a Houston-only crew.

Certified installers, not subcontractors

Our lead installer, Kenny Ho, holds EPA 608 Universal certification, and our crews are NATE-certified. The people who size your system are the same ones who install it.

AHRI-matched systems with the certificate handed to you

That document protects your rated efficiency, your CenterPoint rebate, and your manufacturer warranty. A mismatched coil is the fastest way to void all three.

We pull the permit for your exact jurisdiction

City of Katy, Harris, Fort Bend, or Waller, with the final inspection scheduled.

Transparent, itemized pricing and a free second opinion

We put repair versus replacement side by side, in writing, and review any competitor's whole-system quote at no charge.

A 10-year manufacturer parts warranty when we register your equipment

, and we register it within the window so a missed deadline never costs you the coverage. Licensed and fully insured.

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Get Your Free Katy HVAC System Estimate: Call (713) 598-2737

Replacing a whole HVAC system is a once-a-decade decision, and you deserve to make it with the Manual J numbers, the three system options, and the real costs in front of you. We bring all of it to your kitchen table at no charge. Call (713) 598-2737 to book your free in-home Manual J estimate, ask about financing, and get your CenterPoint rebate mapped to the system you choose. One installer, the whole comfort system, sized and matched for Katy.

You can also explore our full Katy HVAC contractor services, or if only your cooling failed, a cooling-only AC installation.