Top 10 Ac Installation in Washington, DC
The best AC installation companies in Washington, DC for 2026 include DC AIR CONDITIONING &Heating (5), Su' Coy Heating, AC & Duct Cleaning (4.9), Heating Ventilation Air Conditioning Mechanical Service (5). All offer free estimates, licensed installation, and manufacturer warranties on new units.
AC Installation in Washington, DC: What to Know Before You Buy
A new AC system is a major investment. The right installer in Washington, DC will properly size the unit for your home, handle permits, and back the work with a solid warranty. Undersized or poorly installed systems waste energy and fail early.
- Get a Manual J load calculation — not just a rule-of-thumb sizing
- Ask about SEER2 ratings and expected monthly energy costs
- Confirm the warranty covers both equipment and labor
DC AIR CONDITIONING &Heating
Michael & Son Services
Su' Coy Heating, AC & Duct Cleaning
McMurrays Heating & A.C.
Heating Ventilation Air Conditioning Mechanical Service
Magnolia Plumbing, Heating & Cooling
Michael Bonsby HVAC, Plumbing & Electrical
McCrea Heating & Air Conditioning
Riley Heat & Air
C.D. Shanahan's HVAC, Plumbing, Electrical & Remodeling LLC
About These Listings
Provider details on this page come from public business information and each provider's own website. Inclusion here is not an endorsement, and the order shown is not a guarantee of quality. Before hiring, verify licensing, insurance, and pricing directly with the company — request written quotes and confirm credentials with your state or local licensing board.
See something out of date? Contact us.
Frequently Asked Questions
How much does AC installation cost in Washington?
AC installation in Washington costs $3,000-$7,000 for a central air system. A full HVAC system (AC + furnace) runs $5,000-$12,000. Mini splits cost $2,000-$5,000. Price depends on home size, SEER rating, and ductwork needs.
How long does AC installation take?
Standard replacement takes 4-8 hours (1 day). New installation with ductwork takes 2-5 days. Mini split installation takes 1-2 days.
What size AC do I need?
General rule: 1 ton per 500-600 sq ft. A 2,000 sq ft home needs a 3-3.5 ton unit. A professional load calculation (Manual J) gives the precise answer — oversized or undersized units waste energy and fail faster.