Furnace Installation in Austin, TX

New Furnace, Right Size, Right Fuel, Right Spot

Furnace replacement and new heating installs across the Austin area, chosen from a load calculation and matched to the air conditioner already in the house.

Austin Furnace Installation

Three Decisions Before a Furnace Goes In

A furnace in Austin is chosen for a winter that lasts weeks, not months, and for a blower that will spend far more hours moving cold air than warm. That changes the decisions. Fuel first: natural gas where the house already has service and a flue path, propane out past the gas mains in Dripping Springs and Spicewood, and for all-electric homes a choice between resistance heat strips and a heat pump, which is nearly always the better answer here. Size second, from a room-by-room load calculation rather than the label on the old unit. Oversized furnaces are the common Austin mistake; they roar on, overshoot, shut off and leave the far bedrooms cold.

Location third. Slab-built subdivisions in Round Rock, Pflugerville, Kyle and Leander put the furnace in the attic, where it needs a proper platform, a drain pan under the coil, a float switch and enough clearance to be serviced. Older homes in Crestview, Allandale and Hyde Park keep it in a hall closet that has to supply combustion air and vent safely through a roof that has been reshingled a few times. We have installed furnaces in both since 1999, and in every case the new unit has to match the evaporator coil and airflow of the AC it shares a cabinet with.

For the equipment types, efficiency choices and what a replacement includes in either market, see our furnace replacement page.

  • Load-calculated, not guessed Square footage, glass, insulation and duct leakage decide the size, so the furnace runs in long, quiet cycles.
  • One license for gas and heat HVAC license TACLB138285E, with gas piping done under master plumbing license M-42438.
  • Priced both ways If a repair would carry the old furnace another few winters, we say so and quote it beside the replacement.
Radiant installer with a tool bag beside a service van at an Austin home before a furnace replacement

Repair or Replace

When a New Furnace Is the Sensible Call in Austin

Plenty of old furnaces are worth fixing. These are the cases where the money is better spent on a new one.

  • The heat exchanger has failed

    A crack or rust-through cannot be repaired safely. We show you the evidence, then the furnace comes out.

  • The AC coil has been dripping on it

    Five cooling months a year means a clogged drain rusts the burner compartment below. Austin furnaces die of water as often as age.

  • It came with the house in the 1990s

    Original equipment in Cedar Park, Pflugerville and Buda subdivisions has done 25-plus winters and 25-plus summers of blower duty.

  • The repair quote is a big share of a new unit

    An inducer motor or control board on a furnace this old is money on borrowed time. We put both numbers in front of you.

  • The AC is failing too

    When both halves are due, a single heat pump system or a matched furnace-and-condenser pair costs less than replacing them a year apart.

  • The house outgrew it

    A second-story addition or a finished garage on the same old furnace and ducts leaves rooms cold. Resizing is the fix, not another repair.

What We Install

Heating Equipment for Austin Attics and Closets

Gas, propane, electric and heat pump systems, with the venting, gas piping and ductwork handled by the same crew.

Radiant technician beside the outdoor condenser that a new Austin furnace must be matched to
Gas furnaces, electric furnaces and heat pumps installed across the Austin area.

How It Works

From Measurement to First Heat

No sales pitch at the kitchen table. Numbers from the house, options on paper, and a crew that cleans up the attic.

  1. Measure and inspect

    Load calculation, a look at the coil, ducts, flue and gas line, and a check of the electrical the new unit will need.

  2. Options in writing

    Gas, electric or heat pump, priced side by side and honored for 72 hours. Financing terms explained plainly if you want them.

  3. Installation day

    Old furnace out, new one set, vented and piped, gas pressure and combustion tested, and the AC run to confirm the airflow match.

  4. Review and walkthrough

    Installs over $3,000 get a manager quality check. We handle the permit inspection and show you the filter, thermostat and shutoffs.

Replacing a Furnace in the Austin Area?

Get gas, electric and heat pump options priced side by side, with no pressure to pick the expensive one.

What Our Customers Say

Don't just take our word for it — hear from our satisfied customers

C Claudia H.
Claudia H. 3 years ago
★★★★★
Our 18 year old HVAC system finally gave out this past week, so we reached out to Radiant to see what could be done. They sent a tech out named Bryan the same day, and he did a great job looking over the entire HVAC system. He was friendly and helpful in explaining everything that he saw, and our options moving forward. We decided to replace the entire system, so we met with Jacob (same day thankfully) to find the best HVAC system for our needs. Jacob was friendly, professional, and did a great job explaining the different options on offer. Radiant was able to set-up next day install, which was much appreciated, because the temps were still going to be cold in the coming days.

The install team consisted of Carlos and Pablo, who were very courteous and professional, and were kind enough to answer any questions I had regarding the install. They did a great job installing our new HVAC system, and were tidy which is always appreciated! Before they left, they explained everything that had been done, and showed me photos of the work.

Our entire experience from start to finish was great. I appreciate that they send photos of who is coming to your home too. Friendly, kind, professional team members, and good work all the way around. Thanks Radiant!
R Renee Mayer
Renee Mayer 3 years ago
★★★★★
This is the first time I’ve used radiant my neighbor recommended them…. I called them today and they set me up an appointment on the same day. I was totally shocked at that and the service call was only $39!!…. Highly recommend them Danielle showed up and he was a great guy and he put up with all my wishy-washiness and I had to hurry him because I was heading to church and he got caught in a lot of traffic getting here he even would’ve installed the part that broke but I Didn’t have the time tonight….. He was patient with me and just told me to call the office first thing in the morning and get a service call set up…. Thank you so much Radiant!!….
With another cold front coming in tomorrow now I just hope they can get me scheduled for a separate call tomorrow but I have a feeling they will. They are such a great company!!😊😊
J joshua warrick
joshua warrick 8 years ago
★★★★★
My unit had been acting funky for a bit and then decided it would shed its mortal coil and go to the next life. I called an another company lets call them company A since I had a warranty with them thinking I could save a few bucks. They showed up 2 hours late of given window. Warranty didnt cover any of the perceived issues ( not really their fault, maybe). Double billed me (why pay 700 for a service call when you can pay 1400!!! ie: they ran my card twice) and then even though issue still wasnt fixed wanted to upsell me some more for close to 3k or get another sweet unit for an overpriced amount.
I'll admit I was getting desperate. Do I let the giant commercial bad guys win? Give them all my money I could be using on fishing gear? My neighbor happens to work at Schmidt Mechanical Group (shout out to Jared) and got me in touch with their service technicians for a 2nd opinion. ENTER Richard Moreno. Showed up at the beginning of time window. Diagnosed the multiple issues in a timely manner. Explained to me what was going on and why and hand held me through what needed to be done now and what to expect in the future. Worked on both of my units. My bill came to a FRACTION of what was recommended by company A. Mr. Moreno was very professional, kind, and honest. As a first time home owner whos been bamboozled by companies like company A, Schmidt Mechanical Group just gained a customer for life. Look forward to doing more business with them and their techs are awesome. Dont be like me and use company A first. Use this company.

Maintenance Membership

Join the Care Club

Home maintenance for $9.99 a month.

Care Club members get two HVAC tune-ups and a plumbing safety inspection every year, priority scheduling, no dispatch fees — ever — and 5% off every repair.

  • Priority scheduling
  • Seasonal HVAC tune-ups
  • Annual safety inspection
  • Exclusive member discounts
  • Free dispatch on repairs
  • No long-term contracts

Austin Furnace Installation Questions

Which costs less to run in Austin, an electric furnace or a heat pump?

A heat pump, by a wide margin, on almost every winter day here. An electric furnace makes heat by running current through resistance strips, so every unit of heat costs a full unit of electricity. A heat pump moves heat from the outdoor air instead of making it, and in Austin’s 40- and 50-degree winter weather that takes a fraction of the power. The electric furnace is cheaper to buy, which is why builders used them, and it still has a role as the backup stage inside a heat pump air handler for the few nights a year near freezing. If your all-electric home in Manor, Hutto or Kyle is due for a new indoor unit, we will quote both and show the difference on a typical winter bill.

Our furnace is in a hall closet. Should the new one go in the attic instead?

Usually not, unless you are reclaiming the closet for another reason. A closet furnace in an older Austin home is easier to service, sits in conditioned space, and keeps the AC coil and drain out of the attic where an overflow ruins a ceiling. Moving it means a new platform, a new flue through the roof, new gas piping, relocated returns and often new duct runs, and it puts the equipment in a space that hits 130 degrees all summer. The closet does need to be done right: enough combustion air, a louvered door or dedicated vents, correct clearances and a sound flue. We check all of that as part of the quote. If the closet cannot be made safe, we will tell you, and the attic becomes the right answer.

Is a two-stage or variable-speed furnace worth the extra cost in a mild climate?

For the heating side alone, the payback is modest, because a furnace in Austin does not run enough hours to save much gas. The reason to consider one is comfort and the other nine months. A two-stage furnace runs on low most of the time, so it heats gently and quietly instead of blasting and stopping. A variable-speed blower, which usually comes with it, is the same blower that runs your air conditioner from May to October, and it moves air more efficiently, holds humidity better on long cooling days and is far quieter through the returns. If you are also replacing the AC, or if the house has hot-and-cold rooms, the upgrade tends to earn its keep. If the furnace is a straightforward swap on a tight budget, a good single-stage unit sized correctly is a sound choice.

We are past the end of the gas line near Dripping Springs. Can you install a propane furnace?

Yes. A propane furnace is a gas furnace fitted with the manufacturer’s propane conversion parts, which change the burner orifices and gas valve settings for the higher pressure and different burn characteristics of propane. The tank, regulator and line from the tank to the house are the other half of the job, and gas piping is licensed plumbing work in Texas, which we do under our master plumbing license. If there is no gas of any kind and no wish to add a tank, a heat pump is the alternative, and on a Hill Country home in Driftwood or Spicewood it is often the better long-term choice. We can size and quote both. Financing through Service Finance Company is available on either, subject to credit approval.

*Offers cannot be combined with other promotions or applied to dispatch fees. No cash value. Must present offer at time of service. Call for details.
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