HVAC companies in Houston, TX

What HVAC work costs in Houston

Ranges are general estimates gathered from homeowner-reported quotes in the Houston area, not an offer or a quote for your project.

When to schedule HVAC work in Houston

Houston's cooling season stretches from roughly April through October, with July and August highs regularly in the mid-90s combined with dew points that make the air feel even hotter. That heat-and-humidity combination is why AC failures here are treated as urgent even when the temperature alone would not be an emergency elsewhere - high indoor humidity without cooling can lead to mold growth within days in a Houston home. Hurricane season, June through November, brings a second seasonal risk: power surges and outages from storms like those that regularly hit the Gulf Coast can damage outdoor condensers and control boards, so many Houston homeowners add surge protection when they replace a system. Demand and pricing both climb during the June-through-August stretch, so scheduling non-urgent maintenance or replacement in early spring or late fall typically costs less and books faster.

Permits and HOA rules

Mechanical permits for HVAC replacement, new ductwork, or a complete new system in Houston are issued by the City of Houston Permitting Center (Houston Public Works, Building Code Enforcement, Mechanical Inspections section) 1. A full residential system replacement generally falls under the New Complete System permit type 2, while modifying an existing system without full replacement falls under the HVAC Alteration permit 3. Applications and status can be tracked through the Houston Permitting Center's online services, and a licensed contractor should pull the permit and schedule the required inspection before the attic air handler or outdoor unit is closed up. Homes outside Houston's city limits, including many in unincorporated Harris County, may fall under separate county or MUD permitting rules, so confirm jurisdiction before work begins.

Licensing and insurance in Texas

Texas HVAC contractors must hold an Air Conditioning and Refrigeration Contractor (ACR) license issued by the Texas Department of Licensing and Regulation (TDLR) 4, with either a Class A (unlimited tonnage) or Class B (limited capacity) designation. Before hiring anyone in the Houston area, verify the contractor's or company's ACR license number, status, and any disciplinary history using TDLR's free online License Search 5. Never let work begin under an unlicensed operator, and be extra cautious of door-to-door contractors who appear after major storms or heat waves.

What local homes and systems are up against

Most Houston-area homes are built on slab foundations with the air handler tucked into the attic and ductwork routed through that same attic space, which in a Gulf Coast summer can hit 130 degrees or more. That heat load makes attic-mounted equipment work harder and shortens component life compared with a garage- or closet-mounted air handler, and it also means duct leaks in the attic waste conditioned air into the hottest part of the house.

Humidity is the other defining factor. Houston's dew points routinely sit in the 70s during summer, so a system that is oversized or poorly maintained can cool the air without adequately removing moisture, leaving homes feeling clammy and increasing the risk of condensate line clogs, drain pan overflows, and mold growth around vents and in ductwork. Homeowners in older neighborhoods like Montrose and The Heights, where many houses have been retrofitted with central air over the decades, see this problem more often than newer construction in Katy or Sugar Land with tighter, better-sealed duct systems.

Hurricane and tropical storm season, June through November, adds a real risk of power surges and outages that can damage outdoor condensers, capacitors, and control boards. Homes in low-lying, flood-prone pockets near Clear Lake and parts of Kingwood also face the added risk of outdoor unit flooding during major storm events.

The industry-wide phase-out of R-410A in favor of R-454B and R-454A refrigerants is also affecting Houston replacements in 2026, since new equipment sold now largely uses the newer, lower-GWP refrigerants, which can affect parts availability and service costs on mixed-refrigerant systems for the next several years.

How to vet and compare HVAC pros in Houston

Start every search by confirming the company's TDLR Air Conditioning and Refrigeration Contractor (ACR) license is active using TDLR's online License Search, and note whether it is a Class A or Class B license, since Class B carries tonnage limits that matter for larger homes. Our full guide on how to choose and vet a Houston HVAC company walks through the specific questions to ask before you sign anything.

Get at least two or three written estimates for any job over a couple thousand dollars, and make sure each bid specifies equipment brand and model, refrigerant type (R-410A versus R-454B), SEER2 rating, ductwork scope, and who is responsible for pulling the City of Houston mechanical permit. In a market where attic air handlers and long duct runs are standard, ask specifically whether the bid includes attic ductwork inspection or repair.

Ask whether the technician diagnosing your system carries a TDLR technician registration, and check the company's complaint history through TDLR before committing to a multi-thousand-dollar replacement. A legitimate, established Houston HVAC company will provide its ACR license number without hesitation.

What HVAC work costs here

Basic AC repairs, like replacing a failed capacitor or contactor, generally run $150 to $400 in the Houston metro, while bigger failures such as a compressor or evaporator coil replacement can push costs to $1,300 to $3,000. Because condensate and humidity issues are so common here, drain line clearing and condensate pump repairs are a frequent Houston-specific line item, typically $150 to $450. See the full breakdown by failure type in our HVAC repair cost guide.

Full system replacements vary with equipment and refrigerant type: a straightforward split-system condenser swap runs roughly $4,900 to $8,800, while a complete replacement including an attic air handler and updated ductwork can reach $6,800 to $13,000. Systems built around the newer R-454B refrigerant tend to run higher, often $7,500 to $14,500, reflecting both equipment cost and the retrofit or line-set work some homes need. Our Houston HVAC replacement guide covers this in more detail, and AC repair pricing specifically is broken out separately.

Expect prices to run higher during the peak June-through-August stretch, when emergency and same-day dispatch fees rise with demand, and again briefly after major storms when surge damage spikes service calls across the region.

Permits, licensing, and rebates before you sign

Any HVAC replacement or new ductwork run inside Houston city limits requires a mechanical permit through the Houston Permitting Center, typically the New Complete System permit for full replacements or the HVAC Alteration permit for partial work 2. A licensed contractor pulling the permit should also schedule the required inspection once equipment is installed.

Verify the contractor's TDLR ACR license directly at tdlr.texas.gov before signing anything 5, and ask whether CenterPoint Energy's current efficiency programs, including the ComfortCheck A/C tune-up and any active CoolSaver-type rebate for qualifying heat pump or high-efficiency installs, apply to your project 6. Utility rebate programs change year to year and by funding availability, so confirm current terms directly with CenterPoint or your contractor rather than assuming a rebate applies.

A contract that is vague on permit responsibility, refrigerant type, or warranty terms is one of the most common sources of dispute on Houston HVAC jobs, especially on attic-access replacements where labor time is harder to estimate up front.

Frequently asked questions

The answers below cover the questions Houston homeowners ask most before hiring an HVAC contractor. For cost specifics, see our guides on AC repair, HVAC replacement, and repair costs by failure type.

Areas Henry covers

The Heights · Montrose · Katy · Sugar Land · Bellaire · Kingwood · Clear Lake · Meyerland

Common questions

Houston guides from The Henry Files

Nearby Texas markets