Don’t let a sudden Houston cold snap catch you off guard. From 24/7 emergency furnace repairs to high-efficiency heating installations, 24 Seven AC provides the reliability you need at prices you can afford.
In Houston, heating systems sit idle for 9 months out of the year. This inactivity leads to hidden issues that only surface during a freeze. We specialize in fixing:
The #1 reason furnaces won't start after a long summer.The #1 reason furnaces won't start after a long summer.
Clogged filters and dusty blowers that cause systems to "short-cycle" or overheat.
When ice builds up on your outdoor unit during a Texas frost.
Cracked heat exchangers that can leak carbon monoxide into your home.
24/7 Emergency Dispatch: We are local to Houston and Katy, ready to move when the temperature drops.
Multi-System Experts: Specialized in gas furnaces, electric air handlers, and high-efficiency heat pumps.
Home Warranty Mastery: We handle documentation for Choice Home Warranty and Old Republic so your coverage is maximized.
0% APR Financing: New heating installation in Houston starts at low monthly payments with no interest.
Lower Utility Bills: Upgrading an old 80% AFUE furnace to a 96% high-efficiency model can save you 20% on winter gas bills.
Total Peace of Mind: Every repair and installation is backed by our comfort guarantee.
"When the freeze hit last January, 24 Seven AC was at my door within 4 hours. They fixed my furnace igniter and stayed to make sure my home reached 72 degrees. Incredible service!" – David R., Memorial
EXCELLENT Based on 297 reviews Posted on Rene GunnTrustindex verifies that the original source of the review is Google. Mike & Jason both were very professional & helpful when planning for the installation. Ricco & his crew were prompt, courteous, and very professional. He spent time explaining what all they were doing today. Would definitely use him again.Posted on Mike WilliamsTrustindex verifies that the original source of the review is Google. Our system failed, they were able to do a full heat & AC system replacement, communication was easy and they got us back up and going on one of the coldest weeks of the year. Definitely recommend them for your HVAC needs. Ricco did out new install and was awesome to deal with and very thorough!Posted on linda freeTrustindex verifies that the original source of the review is Google. Professional..polite employees..done in a timely manner..fair pricePosted on Ronny TTrustindex verifies that the original source of the review is Google. I would highly recommend 24/7 A/C for any and all repairs large or small. 24/7 worked well with my Home Warranty for a complete replacement of my HVAC Heat Pump Unit!!!!Posted on Joyce MarksTrustindex verifies that the original source of the review is Google. Technician went over and above to take care of our issue! Heater works great now!Posted on Shaundia MarriottTrustindex verifies that the original source of the review is Google. Tommie was an amazing technician who made sure that the furnace blower wasnt constantly running and made sure that everything worked properly before leaving i would give 10 stars if i could.Posted on Ann LivesayTrustindex verifies that the original source of the review is Google. Delightful service repairman, Ricco Sedillo & Leticia Sedillo. He was very knowledgeable about the equipment installed, very positive and friendly, worked nonstop taking old system out and completely installing a new system. Immediate cooling from the new system! Thank you, 24Seven AC!
In 2026, the average cost for a full HVAC replacement (AC + Gas Furnace) in Houston ranges from $5,000 to $15,000, depending on the efficiency (SEER2) and home size. A standalone furnace installation typically ranges from $3,500 to $7,500. We offer 0% APR financing to make these costs manageable.
If your furnace is over 15 years old and the repair cost multiplied by its age is over $5,000, it’s time to consider a new heating installation in Houston. This formula ensures you don’t throw “good money after bad” on an obsolete system.
Because Houston has mild winters with only occasional freezes, heat pumps are increasingly popular due to their high efficiency (200-400%). However, if your home is already set up for natural gas, a gas furnace provides the most powerful heat during extreme cold snaps.
For a 2000 sq ft home, you typically need a 3.5 to 4-ton system. The combined cost for a new high-efficiency system installation usually falls between $8,000 and $13,000.
Your comfort shouldn’t be a gamble. Whether you need a simple Furnace Repair or a complete Heating Repair & Installation in Houston, 24 Seven AC is here. Ensure your system stays healthy with our AC maintenance plans and protect your indoor air with our IAQ solutions.
Get your free estimate for a heater repair or new installation today.
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