Frequently Asked Questions

We offer comprehensive residential HVAC services including air conditioning repair, installation, and maintenance; heating system repair and installation; indoor air quality solutions; duct cleaning and sealing; thermostat installation; and same-day repairs. We service all major brands and system types.

Yes, our technicians are trained and certified to work on all major HVAC brands including Carrier, Trane, Lennox, Rheem, Goodman, American Standard, York, Bryant, and many others. We can repair, maintain, or replace any residential heating or cooling system.

Yes, we offer same-day HVAC repair services throughout the Dallas-Fort Worth area. Service appointments are scheduled Monday-Friday between 9 AM and 6 PM (our office is open from 7 AM if you need to call ahead). When your AC fails on a hot Texas summer day or your heater stops working during a cold snap, call us and we will get a technician to you as quickly as possible.

We proudly serve the Dallas-Fort Worth metroplex from our Coppell headquarters, including Dallas, Irving, Carrollton, Lewisville, Grapevine, Flower Mound, Plano, Frisco, Southlake, and surrounding communities. View all cities we serve →.

DFW HVAC was founded in 2020 — the third generation of my family's 50-plus-year HVAC legacy in Texas. The legacy began in 1972 with my grandfather Garland Nevil, continued through my father Ronny Grubb, and now lives on at DFW HVAC. We hold to the customer-first standards I grew up with — every call, every diagnosis, every install. Read the whole three-generation history →

Our office is open Monday through Friday from 7 AM. Service appointments are scheduled between 9 AM and 6 PM. Emergency calls placed during office hours are dispatched same-day when available; voicemails left after hours are returned the next business morning.

Yes, we provide free estimates for new system installations and major repairs. For service calls and diagnostics, we charge a flat diagnostic fee which is waived if you proceed with the recommended repair. We believe in transparent, upfront pricing with no hidden fees.

We accept all major credit cards (Visa, MasterCard, American Express, Discover), checks, and cash. For larger installations, we also offer financing options with approved credit to help make your investment more manageable.

Yes — we partner with Wisetack to offer flexible financing on qualifying new HVAC installations, including up to 24 months at 0% APR for approved buyers. Pre-qualification takes under a minute with a soft credit check that won’t impact your credit score. Learn more about our financing options →

The cost of a new AC system varies based on the size of your home, system efficiency rating (SEER), brand, and any additional work needed. Residential systems typically range from $4,500 to $12,000+ installed. We provide detailed quotes after assessing your specific needs.

For routine maintenance and non-emergency repairs, we typically schedule appointments within 1-3 business days. During peak season, wait times may be slightly longer. Emergency calls are prioritized and addressed same-day or next-day when available.

Yes, we require an adult (18+) to be present during service calls for safety and liability reasons. This also allows our technician to explain findings, discuss options, and answer any questions you may have about your system.

Our office is open Monday through Friday, 7:00 AM to 6:00 PM, and service appointments are scheduled between 9:00 AM and 6:00 PM. We are closed on Saturday and Sunday.

With proper maintenance, air conditioning systems typically last 15-20 years, while furnaces can last 20-25 years. Heat pumps average 15-18 years. Factors affecting lifespan include maintenance frequency, usage patterns, and local climate conditions.

System sizing depends on your home's square footage, insulation, window placement, ceiling height, and other factors. An undersized system won't cool effectively; an oversized one cycles too frequently. We perform a detailed load calculation to recommend the right size for your home.

SEER (Seasonal Energy Efficiency Ratio) measures an air conditioner's cooling efficiency. Higher SEER ratings mean greater efficiency and lower energy bills. Current minimum standards require 14-15 SEER, while high-efficiency units reach 20+ SEER. Higher efficiency units cost more upfront but save money over time.

Consider replacement if your system is 15+ years old, requires frequent repairs, uses R-22 refrigerant (phased out), or your energy bills are increasing. Generally, if a repair costs more than 50% of a new system's value, replacement is the better investment.

We recommend professional maintenance twice per year - once in spring for your AC before summer, and once in fall for your heating system before winter. Regular maintenance prevents breakdowns, extends equipment life, maintains efficiency, and keeps warranties valid.

Standard 1-inch filters should be changed every 30-60 days. Higher-quality 4-inch filters can last 3-6 months. Factors like pets, allergies, and home dustiness may require more frequent changes. A dirty filter restricts airflow, reduces efficiency, and can damage your system.

Our comprehensive maintenance includes inspecting and cleaning components, checking refrigerant levels, testing electrical connections, lubricating moving parts, calibrating the thermostat, checking airflow, inspecting ductwork, and providing a detailed report of your system's condition.

Yes, we offer annual maintenance plans that include two tune-ups per year, priority scheduling, discounts on repairs, and other benefits. Our plans help you budget for HVAC care while ensuring your system runs efficiently year-round.