AC Replacement and AC Installation
What is going on with your AC?
What kind of system do you have?
Where should we call you?
Faster: call (469) 213-8450
"He was quick to respond, professional, and took the time to explain the root cause of the issue."Subuhi A., Google review
"I went through 6 and all were wrong... I had lost faith in AC companies until you."Homeowner in Burleson, Google review
AC Replacement and AC Installation in North Dallas and DFW
When your air conditioning system has reached the end of its useful life, or when the cost of repair no longer makes sense, Comfort Mechanical Solutions LLC provides professional AC replacement service across North Dallas and the greater DFW area. We help you select the right system for your home or property, handle the complete installation, and make sure it’s commissioned correctly from day one.
New AC unit or a full system? We handle AC installation and AC unit replacement from one-unit swaps to full heating and air systems. Every install is sized with an independent Manual J, set in one day for most homes, and commissioned with a written startup report. See our R-22 replacement guide and financing options.
Signs It’s Time to Replace Your AC System
- The system is 12-15 years old or older
- Repair costs are approaching or exceeding 50% of replacement cost
- The system uses R-22 refrigerant (phased out, no longer produced)
- Efficiency has dropped significantly and energy bills are high
- The system is undersized or oversized for the space
- Comfort problems persist despite repeated repairs
- You’re planning a home renovation or addition that requires a new HVAC design
Our AC Replacement Process
We don’t just swap out a unit. A proper AC replacement involves system design, load calculation, and correct installation, all of which affect how your system performs for years to come. Our process includes:
- System evaluation and load assessment for your specific home
- Equipment recommendation based on your budget, home size, and efficiency goals
- Removal and disposal of the existing system
- Installation of new outdoor condenser, indoor air handler or coil
- Refrigerant line set inspection or replacement as needed
- Electrical disconnect and disconnect box check
- Ductwork inspection and modification if needed
- System commissioning and performance verification
- Thermostat setup and walkthrough
Recent Install: Six Companies Couldn’t Fix It

A homeowner went through six HVAC companies on a 4-year-old oversized system that never cooled the house. We had an independent company run Manual J, S, and D, installed a right-sized GREE FLEXX Ultra inverter system, and cleaned up the previous install in one day.
“I went through 6 and all were wrong… Without doing a Manual J, you wont get the right answers. Henry is the only one to recommend that.” Google review, 5 stars
Why Choose Comfort Mechanical Solutions LLC
Comfort Mechanical Solutions LLC is a licensed HVAC contractor serving North Dallas and the greater DFW area under Texas HVAC License #TACLA00165496E. We’re fully insured and experienced in residential and light commercial system replacements. We work with major equipment brands and focus on proper installation, not the fastest job at the lowest price.
We serve Prosper, Frisco, Celina, McKinney, Plano, Allen, Little Elm, Aubrey, The Colony, Denton, Lewisville, Flower Mound, Carrollton, Richardson, Wylie, Murphy, Anna, Melissa, Gunter, Sherman, and surrounding communities.
Call (469) 213-8450 to schedule a system evaluation and replacement quote.
Related Services
Not sure if you need replacement or repair? Start with an AC Diagnostic. If your system is still in good shape, AC Maintenance can extend its life. After installation, consider enrolling in a Maintenance Plan to protect your investment.
Frequently Asked Questions, AC Replacement
How long does an AC replacement take?
Most residential AC replacements are completed in a single day. More complex installations involving ductwork modifications or multi-zone systems may take longer. We’ll give you a realistic timeline before work begins.
What brand of equipment do you install?
We work with multiple major brands. Equipment recommendations depend on your home’s specific needs, budget, and efficiency goals. We’ll walk you through your options clearly.
Are you licensed for AC replacement in Texas?
Yes. Comfort Mechanical Solutions LLC holds Texas HVAC License #TACLA00165496E. All installation work is performed by licensed technicians in compliance with Texas HVAC regulations.
What areas do you serve?
We serve North Dallas and the greater DFW area. Call (469) 213-8450 to confirm service availability in your area.
AC Replacement by City
- AC Replacement in Frisco
- AC Replacement in Prosper
- AC Replacement in Celina
- AC Replacement in McKinney
- AC Replacement in Plano
- AC Replacement in Allen
- AC Replacement in Denton
- AC Replacement in Little Elm
- AC Replacement in Aubrey
- AC Replacement in The Colony
- AC Replacement in Richardson
- AC Replacement in Carrollton
- AC Replacement in Garland
- AC Replacement in Lewisville
- AC Replacement in Wylie
Three Steps. No Surprises.
- 1Tap or call
Tell us what is going on. A real person calls you back, not an answering service.
- 2We find the cause
Diagnosis first, with photos of what failed. You get repair and replace numbers in writing before any work.
- 3Fixed and documented
Clean work, startup readings recorded, and financing available on replacements.
Request a Quote or Schedule Service.
Based in Prosper, TX
Residential: Greater DFW
Commercial & multifamily: North Texas & Greater DFW