A load calculation determines the correct BTU output for your home before any equipment is selected. An undersized furnace runs constantly without reaching temperature. An oversized unit short cycles and wears out faster. We size it right on the first install.
- Local & Professional
- 24/7 Emergency Service
Furnace Installation in Houston, TX - Dependable Contractors for Every Home
75 Degree AC provides furnace installation in Houston TX for gas furnaces, electric furnaces, condensing units, and every residential configuration. Our licensed contractors handle the full job, from load calculation and equipment selection to ductwork connections, permits, and the final startup test.
- Emergency Appointments Available
- Home & Commercial
- Easy Scheduling
About us
Houston's Trusted Team for Professional Furnace Installation
Every week, 75 Degree AC installs gas and electric furnaces in homes across Houston. Our contractors have worked on single-stage, two-stage, and modulating furnaces in everything from older bungalows in the inner loop to newer construction in the suburbs. That range of experience helps us match the right furnace type and size to each home, not just the most available model. Every furnace installation starts with a proper load calculation to determine the right BTU output for your home. The price covers equipment, labor, permits, old unit disposal, and the city inspection, all in one quote. Nothing is added after the price is set. When a homeowner is choosing between a standard and high-efficiency furnace, we lay out the differences in performance and long-term energy savings so the decision is clear. Our furnace installation service in Houston is backed by fully licensed and insured contractors. We pull all required permits, schedule the city inspection, and register the manufacturer warranty before the job is closed out. Same-day and next-day availability keeps the timeline tight, especially during cold weather when waiting is not an option.
- Ventilation System Maintenance
- Indoor Air Quality Testing
- Cool Craft Custom Solutions
Reliable Furnace Installation Services We Provide in Houston, TX
Gas Furnace Install
Most Houston homes run on natural gas for heating. Our gas furnace installation service includes gas line connection, gas pressure adjustment, flue pipe routing, combustion analysis, and a full safety check. We install both condensing and non-condensing gas furnaces to fit the home's venting and efficiency needs.
Electric Furnace Install
Homes without access to natural gas rely on electric furnaces for heat. Our electric furnace installation service covers breaker sizing, electrical hookup, heating element testing, and airflow balancing. We make sure the unit matches your home's existing panel and duct system.
High-Efficiency Furnace
A condensing furnace captures additional heat through a secondary heat exchanger, delivering a higher AFUE rating and lower fuel costs over time. Our high-efficiency furnace installation service includes PVC vent pipe routing, condensate drain setup, and a full efficiency verification after startup.
Furnace Replacement
When an existing furnace has reached the end of its service life, our furnace replacement service covers old unit removal, proper disposal, and any ductwork modifications needed to fit the new equipment. We handle permits and the inspection so the homeowner does not need to coordinate anything separately.
Furnace and Ductwork
Some installations require ductwork changes to support the new furnace. Our furnace and ductwork installation service includes plenum fabrication, transition fittings, ductwork connections, and airflow balancing across all supply and return vents. The goal is proper airflow to every room in the home.
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Why 75 Degree AC Is the Right Furnace Installer in Houston, TX
When you need furnace installation in Houston, 75 Degree AC brings the right experience and process to every job.
Every Furnace Type
We install gas furnaces, electric furnaces, condensing units, single-stage, two-stage, and modulating systems. When the home needs a basic replacement or a high-efficiency upgrade, we have the experience to install it correctly.
Full Pricing Upfront
The quote covers equipment, labor, permits, disposal, and the city inspection. The price is given before the work begins and does not change. There are no add-on charges or surprise fees after the quote is accepted.
Licensed Contractors
Every furnace installation is performed by fully licensed and insured contractors. All work is backed by a quality workmanship guarantee and the manufacturer warranty is registered before the job is closed out.
Request Your Furnace Installation Estimate Today
Call (713) 598-2737 to schedule furnace installation with 75 Degree AC. Free estimates are provided for every job. Same-day and next-day availability across the Houston metro.
How We Complete Your Furnace Installation in Houston
75 Degree AC follows the same step-by-step process on every furnace installation in Houston, from the first home visit to the final startup test.
Home Evaluation
Our contractors inspect the existing furnace, check the condition of the ductwork, and complete a load calculation to determine the right system size. Electrical panel capacity and gas line sizing are verified before any equipment is recommended.
Match the Furnace
Based on the load calculation and the home's layout, we present furnace options that fit. Gas vs. electric, standard vs. high-efficiency, and single-stage vs. two-stage are explained in plain terms. The all-inclusive price is provided before any commitment.
Old Furnace Removal
The existing furnace is disconnected from gas, electrical, and ductwork connections. The old unit is removed and disposed of properly. The installation area is cleaned and prepped for the new equipment.
New Furnace Setup
The new furnace is positioned, connected to gas lines, electrical wiring, flue piping, and ductwork. Thermostat wiring is run and tested. All connections are sealed, secured, and checked against Houston building code requirements.
Final Startup Check
The new furnace runs through a complete heating cycle under full load. Combustion analysis, gas pressure, temperature rise, and airflow are all measured and confirmed. The manufacturer warranty is registered and the homeowner is walked through the new system controls.
Our Recent Projects in Houston
How a New Furnace Heats Your Houston Home
A gas furnace heats your home by burning natural gas in a sealed burner assembly. The combustion gases pass through the heat exchanger, which transfers heat to the air being pushed through the duct system by the blower motor. Supply vents deliver warm air into each room while return vents pull cooler air back to be reheated. The thermostat, control board, and safety switches manage each cycle automatically.
An electric furnace works without gas. Electric heating elements warm the air directly as the blower pushes it through the system. Electric furnaces have fewer moving parts and no combustion components, which means no flue pipe and no gas line. They are a practical option for Houston homes that do not have natural gas service.
What Parts Of Houston Does 75 Degree AC Serve?
75 Degree AC provides premium HVAC services across Houston, TX, supporting residential and light commercial properties throughout the city. Our service coverage reflects how HVAC demand actually works in Houston, from central neighborhoods to outer city districts. Customers rely on us for consistent service standards, clear communication, and dependable system support city-wide.
Downtown
East Downtown (EaDo)
Westwood
Midtown
Spring Branch (Central, TX)
University Place
Montrose
Gulfton
Meyerland
The Heights
Westbury
Eastwood
River Oaks
Memorial
Harrisburg / Manchester
Third Ward
Lazybrook / Timbergrove
Spring Branch (East Houston)
South Belt / Ellington
Trinity / Houston Gardens
Clear Lake (Houston City Portion)
Richmond
Schedule Furnace Installation in Houston Today
When your old furnace is costing more to run and repair than it is worth, it is time for a new one. Call 75 Degree AC at (713) 598-2737 to schedule furnace installation in Houston today.
Frequently Asked Questions FAQ's
What Type of Furnace Is Best for a Residential Home in Houston?
Gas furnaces are the most common choice for homes with an existing gas line because they heat efficiently and respond quickly. Electric furnaces work well for homes without gas service. Our contractors review your home’s setup and recommend the type that makes the most sense.
How Long Does a Typical Furnace Installation Take From Start to Finish?
Most furnace replacements are completed in a single day. Jobs that require ductwork changes or a switch from electric to gas may take an additional day. Our contractors provide a clear timeline before the job starts.
Are Permits Required for a New Furnace Installation in Houston Texas?
Yes. The city of Houston requires a permit for furnace installation. Our contractors pull the permit, schedule the inspection, and handle all paperwork. The homeowner does not need to visit any city office or coordinate with inspectors.
What Is the Difference Between a Condensing and Non-Condensing Furnace?
A condensing furnace has a secondary heat exchanger that captures additional heat from exhaust gases before they leave the vent. This gives it a higher AFUE rating and lower fuel costs. A non-condensing furnace vents exhaust directly through a metal flue pipe and operates at a lower efficiency.
Can a New Furnace Be Installed With Existing Ductwork in Houston?
In most cases, yes. Our contractors inspect the existing ductwork during the home evaluation and determine when it can support the new furnace. When modifications are needed, such as a new plenum or transition fitting, those are included in the installation quote.
What Should a Houston Homeowner Know Before Replacing an Old Furnace?
The most important factors are proper sizing, fuel type, and efficiency rating. A load calculation determines the right size. Gas vs. electric depends on what is available at the home. Higher efficiency units cost more upfront but lower monthly bills over time. Our contractors walk through all of this before any work begins.
About Houston, TX
Most Houston, TX homes with central heating use gas furnaces connected to the local natural gas supply. In established neighborhoods like Memorial, West University, and Bellaire, many of those furnaces have been running for well over a decade. Parts availability becomes an issue as units age, and heat exchangers that have been exposed to Houston’s hot and humid climate for years develop corrosion that cannot always be caught until it causes a failure or a safety concern.
In the suburbs around Spring, Cypress, and the northwest side of the metro, newer construction often comes with builder-grade furnaces that are sized to meet minimum requirements. Homeowners who want better efficiency, quieter operation, or more consistent heating throughout the home often upgrade to a two-stage or variable speed furnace within the first few years. Houston’s heating season is short, but the cold fronts that do arrive demand a furnace that starts up reliably after months of sitting idle. Proper sizing and professional installation are the best ways to make sure the system is ready when the temperature drops.
