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AfterFurnace Replacement in Dallas, TX
Furnace replacement in Dallas typically costs between $4,200 and $8,500 for a standard efficiency unit, and $8,000 to $14,000 for a high-efficiency model, with most installations completed in a single day. The final price depends on your home’s square footage, ductwork condition, and the furnace brand you select. If your furnace is over 15 years old, needs frequent repairs, or your energy bills keep climbing, replacement usually beats pouring money into another round of fixes.
At Brandt HVAC Co Dallas, we replace furnaces with a process built around one idea: you should know exactly what you’re paying and exactly who’s showing up before either happens. Every replacement starts with a written price. Every technician arrives in uniform, with a photo ID badge, and you’ll get their name and photo sent to you before they pull into your driveway. If the person at your door isn’t the person we told you to expect, that visit is on us. That’s the Threshold Verified standard, and it’s how we’ve done things since 2003. Devin Marlowe leads our Dallas team, and he’s the one accountable for every furnace we replace.
We carry and install Trane, Lennox, and Goodman furnaces, and we service every major residential brand. If you’re not sure whether to repair or replace, call us at (325) 312-3269 and we’ll walk you through the numbers honestly. You can also see our full Heating & Furnace in Dallas page for repair and maintenance options.
When You Need Furnace Replacement
Not every furnace problem means replacement. But when you hit these signs, it’s usually time to start comparing new units rather than scheduling another service call:
- Your furnace is 15 years old or older. Even well-maintained units lose efficiency as heat exchangers and burners wear. In Dallas, where furnaces run hard through December and January cold snaps, age catches up faster than homeowners expect.
- Repair costs are stacking up. If you’ve spent more than $500 on repairs in the past two years and the technician is flagging another failing component, a new furnace often costs less over the next five years.
- Energy bills are rising without a change in usage. Older furnaces run at 60 to 80 percent efficiency. A new Lennox or Trane unit can hit 96 percent AFUE, which translates to real savings on January gas bills.
- Uneven heating between rooms. When a blower motor weakens or duct connections fail, some rooms stay cold no matter where you set the thermostat. Sometimes duct sealing fixes it. Sometimes the furnace itself is the bottleneck.
- Carbon monoxide concerns. A cracked heat exchanger leaks odorless gas into your home. If your CO detector has gone off or a technician flags a crack during inspection, shut the system down and replace it. This is not a repair-and-wait situation.
- Strange noises that keep returning. Banging, rattling, or humming that persists after a repair usually points to component failure at the core of the unit. Once the blower assembly or heat exchanger goes, replacement is the safer financial move.
Our Furnace Replacement Process
We’ve refined this process over two decades so there are no surprises. Here’s exactly what happens from the first call to the final check:
- You call us and a live person answers. At 2 p.m. or 2 a.m., you’ll reach a real human at (325) 312-3269. We take your information, ask about your home size and current furnace, and schedule a time that works for you.
- You get your technician’s name and photo before the visit. We send it by text or email, whichever you prefer. When the technician rings your doorbell, they’ll show a photo ID badge. They’re background-checked and identity-verified through the Threshold Verified standard. If someone else shows up claiming to be us, don’t open the door, and call us immediately.
- The technician inspects your current system. We measure your home’s square footage, check ductwork condition, inspect the existing furnace and flue, and review your home’s insulation. In Dallas homes with pier-and-beam foundations, we also check under-floor duct runs, because leaks there waste heat before it ever reaches your bedrooms.
- You get a written price before any work starts. No verbal estimates that change later. We put the total in writing, line by line: the furnace, the labor, the removal and disposal of your old unit, and any duct modifications. You approve it before we lift a single tool.
- We install and test the new furnace. Most replacements finish in one day. We remove the old unit, install the new one, connect the gas line and electrical, verify proper ventilation, and run a full startup sequence to confirm airflow, temperature rise, and safety controls are working correctly.
- You get a written guarantee. Every furnace replacement includes a written guarantee covering the workmanship and installation for 365 days. If something isn’t right within that year, we return at no charge under our 365-Day Done Right Promise. No argument, no invoice, no fine print.
Furnace Replacement Pricing in Dallas
Here’s what homeowners in Dallas should expect to pay for a furnace replacement. These are real ranges based on units we install regularly in this market:
| Furnace Type | Typical Unit Cost (Parts) | Installed Price Range |
|---|---|---|
| 80% AFUE single-stage (Goodman, Rheem) | $1,800 – $2,600 | $4,200 – $5,800 |
| 92% AFUE two-stage (Goodman, Lennox) | $2,400 – $3,400 | $5,200 – $7,000 |
| 96% AFUE variable-speed (Trane, Lennox) | $3,200 – $4,800 | $7,200 – $9,500 |
| 96%+ AFUE high-efficiency with smart thermostat | $3,800 – $5,500 | $8,500 – $14,000 |
What moves the price up or down:
- Home size. A 1,400-square-foot ranch in Casa View needs a 60,000 BTU furnace. A 3,200-square-foot two-story in Lake Highlands needs 100,000 BTUs or more. Bigger unit, bigger price.
- Ductwork condition. If your existing ducts are undersized, leaky, or poorly sealed, we may need to modify or add runs. In older Dallas homes, we commonly find 30 to 40 percent duct leakage, and fixing that adds real value but also real cost.
- Efficiency rating. The difference between 80 percent and 96 percent AFUE is about $3,000 to $4,000 upfront, but it typically saves $200 to $350 per year on gas bills based on Dallas winter usage patterns.
- Brand selection. Goodman and Rheem land on the affordable end. Lennox and Trane cost more upfront and carry stronger warranties and longer service life. We install all of them and will quote whatever you want, with no pressure toward the expensive options.
Every quote is free and in writing. Call (325) 312-3269 and we’ll send a technician to your home, measure everything, and give you a number you can actually plan around.
FAQs – Furnace Replacement
How much does a new furnace cost in Dallas?
A new furnace in Dallas runs between $4,200 and $14,000 fully installed, with most mid-efficiency replacements landing in the $5,000 to $8,000 range. The spread comes down to furnace size, brand, efficiency rating, and whether your ductwork needs work. Call (325) 312-3269 for a free written estimate specific to your home, no ranges or vague ballparks.
Is it cheaper to repair or replace a furnace?
When repair costs exceed 30 percent of a new furnace’s price and the unit is over 12 years old, replacement is usually cheaper over the next five years. A $650 blower motor on a 16-year-old furnace only makes sense if the heat exchanger is in good shape and you plan to move within two years. We’ll give you straight numbers either way and let you decide with the full picture.
Can you replace my furnace the same day?
In most cases, no, because we measure your home, order the correctly sized unit, and schedule installation with the equipment in hand. Emergency replacements are rare but possible when a furnace fails and a family is without heat during a Dallas cold snap. Call (325) 312-3269 and we’ll tell you honestly how fast we can get to you.
How long does furnace replacement take?
Standard furnace replacement takes 4 to 8 hours from arrival to final testing. Most Dallas homeowners schedule us for a morning arrival and have heat running by dinner. Complex jobs with duct modifications can extend into a second day, and we’ll tell you before we start if that’s the case.
What furnace brands do you install?
We install Trane, Lennox, Goodman, and Rheem furnaces, and we can order any major residential brand you prefer. Each has different strength areas. Goodman delivers solid reliability at a lower price. Lennox leads on efficiency. Trane carries strong long-term warranties. We’ll quote the one that fits your budget and home.
Do you offer financing for furnace replacement?
We offer straightforward financing options for furnace replacement, with terms we’ll walk you through before you sign anything. You’ll know the monthly payment and the total cost before any work starts, in writing, with no hidden add-ons. Call (325) 312-3269 and we’ll run the numbers with you.
Written by Devin Marlowe, Owner at Brandt HVAC Co Dallas, serving Dallas.