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HVAC installation & Repair
Expert Residential and commercial systems Service with certified energy efficiency.
About us
15+ years of comfort
WJ ComfyAir Pros LLC is a family-owned company focused on indoor comfort. We specialize in installation, maintenance, and repair of air conditioning and heating nationwide.
Our team of certified technicians is dedicated to providing superior comfort solutions through meticulous installation and dependable maintenance. From residential furnace replacements to large-scale commercial rooftop units, we handle every project with professional precision and neighborly care.
15+
Years Experience
500+
Systems Installed
24/7
Emergency Line
Licensed & Insured
Same-Day Service
All Major Brands
What we do
Thermal comfort solutions
Complete HVAC installation, repair & maintenance for homes and businesses across Bethesda, Rockville, Silver Spring, Chevy Chase, Potomac & the greater Montgomery County and DMV area. Licensed & insured. Available same-day — call (240) 678-6391.
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Maintenance plans
Routine checkups to avoid costly breakdowns and extend equipment life.
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Water heaters
Installation and repair of traditional and tankless systems.
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Indoor air quality
HEPA filters, UV purifiers, and humidity control for a healthier home.
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Thermostats & Smart Controls
Upgrading your control for maximum savings and comfort.
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24/7 Emergency Service
Rapid response for critical repairs when you need it most.
In the field
Project gallery
Recent installs and projects — the same quality you see on every visit.
Happy clients
What people are saying
5.0Based on 16 Google reviews
Real stories from homeowners across Maryland & the DMV.
Direct line
AC emergency?
We handle critical failures fast — don’t suffer heat or cold longer than you have to.
(240) 678-639124-hour / 7-day service
Common Questions
HVAC FAQ
Most new systems starting in 2025-2026 will use R-454B reflectng new environmental standards. If your current system uses R-410A, it can still be serviced, but the cost of the refrigerant may increase as it is phased out.
Modern heat pumps are highly efficient, providing both heating and cooling in one unit. They can significantly lower energy bills in the DMV area and may qualify for federal tax credits under current energy laws.
If your unit is over 10-12 years old and the repair cost multiplied by its age exceeds $5,000, replacement is usually more cost-effective than continued repairs.
We recommend MERV 13 filters, UV-C light disinfection, or humidity control systems to remove allergens, viruses, and pollutants from your indoor environment.
Yes, by optimizing your home heating/cooling schedule based on occupancy and real-time outdoor temps, smart thermostats save an average of 8% on annual utility costs.
Quick request
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