Residential Heat Pump Installers in Lewisville, TX: How Heat Pumps Work, What Installers Check and How to Choose One

TL;DR: Residential heat pump installers in Lewisville, TX size the system with a load calculation, match the indoor and outdoor units, set up backup heat for cold snaps and test the refrigerant circuit before the job closes. TexAire Heating & Air Conditioning Repair installs, replaces, repairs and maintains heat pumps for homes in Lewisville and across Denton County, and holds a 5.0-star Google rating from 308 reviews (October 2026).

Homeowners who look for residential heat pump installers in Lewisville, TX usually want 1 system that handles both the summer cooling load and the winter heating load. A heat pump cools like a central air conditioner and then reverses to heat the house in winter. North Texas winters are short and mild in most years, which suits that design well.

The installation decides how well that design performs. A heat pump sized by guesswork, charged by feel or paired with a poorly set thermostat loses efficiency in July and leans on expensive backup heat in January.

How Does a Heat Pump Work?

A heat pump works by using electricity to move heat from a cooler space to a warmer one, the same way a refrigerator does, according to the U.S. Department of Energy. The system pulls heat out of the house in summer, and in winter a reversing valve flips the refrigerant flow so the system pulls heat from outdoor air and delivers it indoors.

Moving heat costs less than making it. The Department of Energy states that a modern heat pump can reduce electricity use for heating by up to 75% compared to electric resistance heating such as electric furnaces and baseboard heaters. High-efficiency heat pumps also dehumidify better than standard central air conditioners, according to the same source.

Is a Heat Pump a Good Fit for a North Texas Home?

A heat pump fits a North Texas home well, because the climate calls for long cooling seasons and relatively short heating seasons. A heat pump delivers the same cooling as a central air conditioner of the same size and adds efficient electric heat on top.

Cold snaps call for backup heat. A residential heat pump pairs with electric heat strips in the air handler or with a gas furnace in a dual-fuel setup, and the backup takes over when outdoor temperatures drop far enough to slow the heat pump. The Department of Energy notes that cold-climate heat pump models now operate at temperatures as low as 5°F, which widens the range where the heat pump carries the load alone.

Homes that already have ductwork switch to a heat pump most easily, according to the Department of Energy. Homes without ducts use ductless mini split heat pumps instead.

What Do Residential Heat Pump Installers in Lewisville, TX Check?

Installers check 6 parts of the home before they recommend equipment. Each check affects sizing, efficiency or safety:

1. The installer runs a load calculation from the home's square footage, insulation, windows and orientation.
2. The installer inspects the ductwork for leaks, crushed runs and undersized returns.
3. The installer confirms that the electrical panel supports the heat pump and any backup heat strips.
4. The installer checks the outdoor pad location for airflow and for drainage of defrost water.
5. The installer confirms the thermostat supports heat pump staging and auxiliary heat control.
6. The installer reviews the City of Lewisville permit and inspection requirements for mechanical and electrical work.

A written estimate turns those checks into a proposal. The proposal names the outdoor unit and indoor coil or air handler by model number, the backup heat type and size, the efficiency ratings and the warranty terms.

How Do Installers Size a Heat Pump?

Installers size a heat pump with an ACCA Manual J load calculation, the method the U.S. Department of Energy points to for right-sizing residential heating and cooling. The calculation sets both the cooling load and the heating load, and the installer picks equipment that covers the larger need without oversizing.

Sizing comes before the equipment order. TexAire begins every new heat pump installation with a full load calculation for the property before any equipment is ordered, according to its heat pump page. A correctly sized heat pump avoids the short cycling that leaves a North Texas home humid in summer and wears the compressor early.

Which Efficiency Ratings Apply to New Heat Pumps in 2026?

New split-system heat pumps meet a nationwide minimum of 14.3 SEER2 for cooling and 7.5 HSPF2 for heating under the U.S. Department of Energy standards that took effect in 2023. SEER2 measures cooling efficiency, while HSPF2 measures heating efficiency, and higher numbers mean lower operating costs.

ENERGY STAR certified heat pumps exceed those minimums. A homeowner compares SEER2 and HSPF2 together, because a heat pump with a strong cooling rating and a weak heating rating costs more to run through a cold January.

How Do Refrigerant Rules Affect a Heat Pump Installation?

Refrigerant rules affect a heat pump installation because new residential split systems use lower-GWP refrigerants under the U.S. Environmental Protection Agency's Technology Transitions rule, which applied to systems made from January 1, 2025. The window to install new R-410A split systems closed on January 1, 2026.

The newer refrigerants raise the bar for line-set work. TexAire's technicians braze copper joints, pull a full vacuum on the line set, confirm the result with a second vacuum test and charge the system to the exact factory specification, according to the company's heat pump page. A tight, clean refrigerant circuit protects the compressor and keeps the heat pump at its rated efficiency.

Technicians who handle refrigerant hold EPA Section 608 certification. A homeowner asks for the technician's certification along with the company's state license.

How Do Thermostats and Backup Heat Settings Affect Comfort?

Thermostats and backup heat settings affect comfort because they decide when the heat pump runs alone and when the more expensive backup heat starts. A thermostat set up for a standard air conditioner and furnace often calls for auxiliary heat too early.

A heat pump thermostat with staging control keeps the compressor running as the first stage of heat. The installer sets the outdoor temperature at which backup heat takes over and explains the emergency heat setting to the homeowner. Smart thermostats add remote control and scheduling, which helps a homeowner avoid heating an empty house.

How Do Homeowners Maintain a Heat Pump?

Homeowners maintain a heat pump with professional service twice a year, because a heat pump runs in both summer and winter instead of resting for half the year. A spring visit prepares it for cooling, and a fall visit prepares it for heating and checks the defrost cycle and backup heat.

Twice-yearly service protects a system that never gets an off season. TexAire schedules heat pump maintenance before summer and before winter, and each maintenance visit carries the company's Never Breakdown Guarantee, according to its heat pump page. Between visits, a homeowner changes the filter on schedule and keeps leaves, snow and debris away from the outdoor unit.

How Do Homeowners Choose a Heat Pump Installer?

Homeowners choose a heat pump installer by confirming a Texas Department of Licensing and Regulation contractor license, EPA Section 608 certification for the technicians, a written load calculation and an itemized estimate. Reviews that mention heat pump work specifically carry more weight than general reviews.

Heat pump work in Texas falls under the same state contractor license as air conditioning work. TexAire's heat pump page lists Texas HVAC license TACLA96420E for its repair, replacement and installation work, and the company runs as a family-owned contractor. A homeowner enters that number in TDLR's public license search before signing, then confirms that the same number appears on the written proposal.

Frequently Asked Questions

Which is better for Texas, a heat pump or an air conditioner?

A heat pump and an air conditioner deliver the same cooling, but a heat pump also heats the home efficiently, which makes it a strong fit for Texas homes with electric heat. Homes with a newer gas furnace sometimes keep the furnace as backup in a dual-fuel setup. The right choice depends on the home's fuel source, ductwork and budget.

How do residential heat pump installers in Lewisville, TX price a job?

Installers price a heat pump job from the system size, the SEER2 and HSPF2 ratings, the backup heat type, any ductwork or electrical upgrades and the permit. A dual-fuel or variable-speed system costs more than a single-stage heat pump with heat strips. A written, itemized estimate after a home visit gives the real number.

Does a heat pump work when it freezes in North Texas?

A heat pump keeps heating when outdoor temperatures drop below freezing, though its output falls as the air gets colder. Backup heat strips or a gas furnace cover the gap during hard freezes. Cold-climate models operate at temperatures as low as 5°F, according to the U.S. Department of Energy.

Does a new heat pump qualify for a federal tax credit in 2026?

A new heat pump installed in 2026 does not qualify for the federal 25C energy efficient home improvement credit, which ended for equipment placed in service after December 31, 2025. Utility rebate programs still change from year to year. A homeowner checks the local electric utility's current offers before signing a contract.

Does a heat pump installation need a permit in Lewisville?

A heat pump installation in Lewisville needs a building permit, because the city requires permits for mechanical and electrical work. The installer pulls the permit and schedules the city inspection. The homeowner keeps the passed inspection with the warranty paperwork and the load calculation.