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★★★★★ 4.8 · 1,300+ reviews
Lic. CAC1819196 · CFC1431159
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Heating Troubleshooting

Furnace Blowing Cold Air?

Furnace fan runs but air is cold, gas-side issue. 4 common causes. CAC1819196.

Quick Answer

Gas furnace blowing cold = (1) pilot out ($279 thermocouple fix), (2) thermostat set wrong (set HEAT + temp above room), (3) failed flame sensor or ignition ($279-$399), or (4) gas supply interrupted (check valve to furnace). Different from heat pump blowing cold. Call (813) 343-2212.

Cold Air from Gas Furnace

Pilot Out / Thermocouple

Call a tech

Symptom: Gas furnace, no flame, cold air only.

Thermocouple replacement $279.

Thermostat Wrong

DIY possible

Symptom: Mode on “fan” only, or temperature below room.

Set to HEAT mode, temp above current. DIY.

Ignition Failure

Call a tech

Symptom: Electronic ignition furnace, clicks but no flame.

Hot surface igniter $279-$399.

Gas Supply Issue

Call a tech

Symptom: Whole house gas issue, or supply valve closed.

Check TECO + valves. If no supply, TECO first.

What to Do Right Now

  1. Check thermostat, HEAT mode, AUTO fan, temp above room.
  2. Check pilot (gas furnace), following sticker instructions.
  3. Check gas supply valve to furnace (open).
  4. Still cold? Call for FREE diagnosis.

FREE diagnosis. Thermocouple: $279. Igniter: $279-$399. Gas valve: $299.

FAQ

Heat pump vs furnace?

Heat pump: electric, reverses AC. Furnace: burns gas. See heat pump cold air guide if you have a heat pump.

First heat smells bad?

Dust on heat strips burning off. Normal for 1-2 hours first use each season.

Why now in Tampa?

Cold snap forced it on. Marginal issues that were dormant show up during rare heat use.

How fast can you come?

Same-day Tampa Bay, cold-weather prioritized.

Need Tampa Service Today?

Same-day Tampa Bay. FREE diagnosis. (813) 343-2212.

★★★★ 4.8 (1,339 verified reviews)
Verified4.8★ · 1,339 reviews
🛡 FL Licensed: CAC1819196 · CFC1431159💼 $1M General Liability + Workers’ Comp🏠 Family-owned since 2017⚡ Same-day service
★★★★★

They worked on my AC and were very helpful and friendly. Definitely recommend them!!

Muluken Damessa · · Google
★★★★★

The technician Dusty from Home Therapist was extremely professional and truly went above and beyond. He was knowledgeable, courteous, and took the time to explain everything clearly while making sure the job…

N · · Google
★★★★★Plumbing

They are very professional, punctual, and organized. Adarberto is a great plumber. His experience and knowledge left us with a lot of confidence and peace of mind. We will definitely call them…

Orlienski Perez · · Google
★★★★★

A very friendly and very professional company. They get the job done right and efficiently! And their rates are reasonable. Highly recommend!

Emi Plays · · Google
★★★★★

AC therapist are the best in this area. They explain everything that they find and what they recommend

Roberto Hernandez · · Google
★★★★★Plumbing

I had a great experience with Alejandro from Home Therapist Cooling, Heating, and Plumbing. He repaired two toilets and installed the water line to my new refrigerator after the delivery team refused…

Thomas Jones · · Google
★★★★★AC repair

Amazing service from start to finish. My AC system completely stopped working, and they were able to come out the same day, which was a huge relief. The technician was professional, knowledgeable,…

Manny Velasquez · · Google
★★★★★Water heater

As an engineer/fabricator/assembler, I have high standards from my contractors. This guy Sam, he fulfilled all my requests and installation needs. He took pride of his work, and left me with a…

ALEXANDROS ORESTIS · · Google
★★★★★Plumbing

A big THANK YOU to Home Therapist Cooling, Heating and Plumbing for running sewer pipes to our RV and shed! Samuel was beyond amazing! He was prompt, professional, and his communication style…

Mindy Walker · · Google
Latest review: May 2026 · auto-refreshed daily
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Reviewed by Richard MoralesCo-Owner & FL Class B Air Conditioning Contractor, Home Therapist

Richard co-owns Home Therapist Cooling, Heating, and Plumbing and holds the FL Class B Air Conditioning Contractor license (CAC1819196) since 2017. The company holds licenses CAC1819196 (FL Class B AC Contractor, Richard Morales) and CFC1431159 (FL Plumbing Contractor, Alex Morales), serving the Tampa Bay metro with a six-technician field team and 1,378+ verified five-star reviews.

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