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AfterFurnace Replacement in Houston, TX
Furnace replacement in Houston typically costs $4,200 – $8,900, depending on the system size, efficiency rating, and whether any ductwork or gas-line modifications are needed. Most Houston-area replacements take one to two days on site, and the right furnace for your house depends on square footage, insulation, and whether you want to stage the job alongside an AC upgrade. Dalton Heating & Air Houston gives you a written price before any work begins, so you know the exact number before a single tool comes off the truck. This page is part of our Heating & Furnace in Houston guide. If you’re ready to talk numbers, call (903) 494-7686 and a live person answers, day or night.
Key Takeaways
- Most full furnace replacements in Houston run $4,200 – $8,900 installed.
- High-efficiency units (90%+ AFUE) cost more upfront but cut gas use by 15 – 25% compared to an aging unit.
- Dalton writes the full job price before any work begins, and that number does not move.
- We stock, install, and service furnaces from Carrier, Trane, Lennox, and Goodman.
- Every replacement carries the 365-Day Done Right Promise in writing.
When You Need Furnace Replacement
Houston winters are short, but when a December cold front hits the Gulf Coast, a furnace that fails to fire turns a minor annoyance into a cold, damp house within hours. Replacement is not always the answer to a repair bill, but there are specific signs that point to new equipment being the smarter money. Here is what we see in homes across the Houston area when a furnace has reached the end of its useful life:
- The furnace is 15 years old or older and the repair quote exceeds a third of a replacement. At that age, even a solid fix keeps an efficiency problem in place. A 2008-era unit runs somewhere around 80% AFUE; a new 95% AFUE furnace burns noticeably less gas for the same heat.
- The heat exchanger has cracked or is showing rust around the seams. This is not a patch-it situation. A cracked exchanger can release carbon monoxide into the airstream, and no reputable company will tell you to keep running it.
- Uneven heating between rooms that has gotten worse over two or more winters. This often points to a blower that is losing static pressure or a furnace that is oversized for the ductwork, and Houston homes with older additions are notorious for this.
- Rising gas bills with the same thermostat settings across two comparable winters. When a unit loses combustion efficiency, you pay for heat that goes up the flue instead of into the house.
- Constant cycling, where the furnace kicks on and off every few minutes without satisfying the thermostat. This is usually an airflow or overheating problem that shortens the life of the blower motor and the control board.
- The house smells dusty or has dry, uncomfortable air every time the heat runs. An old furnace without proper filtration or humidity balance makes winter air feel worse than it should, especially in Houston’s already-humid climate.
If two or more of those boxes are ticked, replacement may cost less over five years than nursing the old unit along. We will tell you straight if a repair is all you need. That is the honest trade answer, and it is the one Marco Benitez expects from every tech who wears a Dalton uniform.
Our Furnace Replacement Process
Nobody enjoys shopping for a furnace, and we do not want to make it worse. Here is how a replacement job runs when you call us:
- Call or book a site visit. You reach a live person at (903) 494-7686, not a voicemail tree. We schedule a time and tell you who is coming, with no open-ended windows.
- We measure the house and inspect the ductwork. We do a load calculation based on your square footage, ceiling height, window area, and insulation, not a guess from the old unit’s nameplate. In Houston homes with slab foundations and converted attics, that matters.
- You get a written quote with equipment options. We typically walk you through two or three furnace choices, such as a high-efficiency Trane or a mid-range Goodman or Lennox, with the price for each in writing before you decide anything.
- We install on the scheduled day. The old furnace comes out, the new one goes in, and the gas line, venting, and condensate drain are all reworked to match the new unit’s requirements. We keep drop cloths down and clean the site before we leave.
- We test and walk you through the system. We run the heat through a full cycle, set the gas pressure, and confirm the airflow. Then we hand you the paperwork: a written guarantee, the equipment warranty, and the price you already agreed to.
If anything is not done right in the first year after the replacement, the 365-Day Done Right Promise means we return and fix it. That is The Garrison Standard, applied to every furnace job we do in Houston and the surrounding areas. Call us at (903) 494-7686 to schedule a site visit.
Furnace Replacement Pricing in Houston
Replacement furnace prices in the Houston market vary by brand, efficiency, and whether the home was originally built for a 70% or 80% furnace, which can affect venting and drain work. Here is what we see as of 2026:
| Furnace Type | Typical Installed Range | Best For |
|---|---|---|
| 80% AFUE single-stage (Goodman, Lennox) | $4,200 – $5,600 | Budget-conscious replacement, smaller homes |
| 92 – 95% AFUE two-stage (Carrier, Trane) | $5,800 – $7,400 | Mid-size homes, better humidity control |
| 96 – 98% AFUE variable-speed (Trane, Lennox) | $7,200 – $8,900 | Larger homes, homes with zoned ductwork |
| Furnace plus AC coil replacement | Add $1,200 – $2,100 | When the existing AC coil is rusted or mismatched |
The biggest cost variables in Houston are the furnace’s efficiency rating, the condition of your ductwork, and whether a new condensate line or gas-line resizing is required. Houses in neighborhoods like Meyerland, Oak Forest, and Kingwood that still have original 1980s or 1990s gas lines often need a new flexible connector and a larger sediment trap to pass current code. We include those line items in the written quote, so there is no upcharge surprise on install day.
Every replacement quote is free. Call (903) 494-7686 and we will schedule a time to measure and price it out.
FAQs – Furnace Replacement
How much does furnace replacement cost in Houston?
A furnace replacement in Houston generally costs $4,200 – $8,900 installed, with the exact price driven by efficiency rating, brand, and any ductwork or gas-line adjustments. We write the full cost in a quote before any work starts, and that number does not change at the door. Call (903) 494-7686 for a free, exact estimate.
Is it cheaper to repair or replace a furnace?
Repairs under $500 and a unit under 12 years old usually favor repair, while repairs over $1,200 on a furnace older than 15 tend to favor replacement. A blower motor on a 2014 Trane or Carrier might be a $500 fix, while a cracked heat exchanger on a 2007 Goodman is a replace-the-unit call. We quote both options and let you decide with the full picture in front of you.
Can you replace a furnace the same day?
In most cases, yes, if the equipment is in stock at our Houston warehouse and the sizing is straightforward. Complex jobs with ductwork or gas-line changes typically schedule for the next available slot. Call early and a live person will tell you exactly what is possible for your job.
What brand of furnace does Dalton install?
We install and service furnaces from Carrier, Trane, Lennox, and Goodman, and we are factory-trained to work on all nine major residential HVAC brands. Our recommendation depends on your home’s ductwork, your budget, and how long you plan to stay in the house, not on which unit pays us the most. We will quote you the same job on multiple brands so you can compare.
Do you offer a guarantee on furnace replacement?
Yes. Every furnace replacement carries the 365-Day Done Right Promise in writing. If the installed system is not right within a year, we return and make it right at no charge, and we also back every repair with a written guarantee and a free second visit if the repair fails.
Contact Dalton Heating & Air Houston
If your furnace is getting old or acting up, the next step is a straight answer. Call (903) 494-7686 for a free replacement estimate. A real person answers, 24 hours a day, 7 days a week. We arrive inside the window, put the price in writing before any work starts, do the job by the book, clean the site, and stand behind the work for a full year. That is The Garrison Code, and every Dalton Heating & Air Houston job lives by it.
Written by Marco Benitez, Owner at Dalton Heating & Air Houston, serving Houston.