HVAC companies in Leander, TX
Quick answer
2 heating and air conditioning companies have a local office in Leander, TX on 1-800Deals: Aire Serv of Cedar Park and One Hour Heating & Air Conditioning of Northwest Austin. Pedernales Electric Cooperative offers an optional Time-of-Use Rate that, as of 2026, charges the most for electricity during the summer peak from 4 to 8 p.m., June through September, and much less overnight. PEC notes that when a heat pump cannot keep up, its auxiliary resistance heat strips turn on and can use about double the energy.
Last updated September 28, 2026. Sources are linked below.
Heating and air conditioning companies serving Leander and nearby Williamson County communities, with the services and service areas each one lists. We list 2 companies with a local office here:
- Aire Serv of Cedar Park, , Leander. Services include emergency hvac services, emergency hvac installation and replacement, air conditioner repair, air conditioner installation and replacement, mini-split repair, mini-split installation and replacement; serves Austin, Cedar Park, Leander, Marble Falls, Spicewood.
- One Hour Heating & Air Conditioning of Northwest Austin, 775 CR 270, Leander. Services include thermostats, humidifiers, dehumidifiers, duct sealing, air quality, air handlers; serves Anderson Mill, Barton Creek, Bee Caves, Bee Creek, Berry Creek, Canyon Creek, Cimmaron Hills, ClearWater Ranch, Cowan Creek, Four Points and more.
What to know about HVAC in Leander
Time-of-use pricing rewards pre-cooling
Pedernales Electric Cooperative offers an optional Time-of-Use Rate that, as of 2026, charges the most for electricity during the summer peak from 4 to 8 p.m., June through September, and much less overnight. PEC suggests using a smart thermostat to pre-cool or pre-heat your home during off-peak hours, and members can run a Time-of-Use calculator in their online account using their past 12 months of use. If you are on this rate or considering it, ask your HVAC contractor about a thermostat that can be scheduled around those hours. Source: Pedernales Electric Cooperative: Time-of-Use Rate
Watch for auxiliary heat on a heat pump
PEC notes that when a heat pump cannot keep up, its auxiliary resistance heat strips turn on and can use about double the energy. It advises raising the heat setting no more than 2 degrees at a time and checking that the outdoor compressor runs whenever the indoor air handler does in heat mode. PEC also says frequent defrost cycles are a sign the system needs maintenance by a licensed professional. Source: Pedernales Electric Cooperative: Check Your Heat Pump
Know the ERCOT grid alerts
ERCOT's Texas Advisory and Notification System issues a Weather Watch about 3 to 5 days ahead of forecasted significant weather and high demand, followed if needed by a Voluntary Conservation Notice or a more urgent Conservation Appeal. During those periods ERCOT asks Texans, if safe, to raise the thermostat a degree or two in summer or lower it a degree or two in winter. You can sign up for TXANS emails or use the ERCOT mobile app to get the alerts. Source: ERCOT: Texas Advisory and Notification System (TXANS)
Check the license
Heating and air conditioning contractors in Texas are licensed by the Texas Department of Licensing and Regulation, which requires a license for anyone who installs, repairs or maintains air conditioning, refrigeration or heating systems. Every air conditioning and refrigeration company must employ a licensed ACR contractor at each permanent business location; verify the contractor in TDLR's license search. Source: official licensing page
Frequently asked questions
When is electricity most expensive on PEC's Time-of-Use Rate?
As of 2026, the summer peak runs from 4 to 8 p.m., June through September. PEC suggests using a smart thermostat to pre-cool your home during cheaper off-peak hours.
Why is my heat pump bill so high in winter?
PEC says auxiliary resistance heat can use about double the energy of the heat pump alone. Raise the thermostat no more than 2 degrees at a time and have a licensed professional check the system if the outdoor unit is not running or it defrosts often.
What should I do when ERCOT issues a conservation appeal?
ERCOT asks Texans to conserve during the appeal period if safe, such as raising the thermostat a degree or two in summer or lowering it a degree or two in winter, and avoiding large appliances.
1-800Deals lists companies based on the information they publish; a listing is not an endorsement. Before hiring, check licensing, insurance, reviews and a written estimate.
