Insulation Services in Northern Virginia
Get expert home insulation that improves comfort and lowers energy bills. Cardinal Plumbing Heating & Air Inc installs and upgrades attic and duct insulation with certified, in-house HVAC technicians. We serve Northern Virginia, including Alexandria, Arlington, and Fairfax. Homeowners trust our upfront pricing and our 4.9 rating from 1,059 reviews. Need it soon? We offer same-day appointments and 7‑day availability. Schedule your estimate today.
Why Choose Us
Certified in-house techsTrained, certified HVAC specialists. No subcontractors.
Licensed and insuredVirginia Contractor License #2705153728.
Top-rated service4.9 rating from 1,059 reviews.
Upfront, honest pricingDetailed quotes before work begins.
Strong guaranteesMoney-back guarantee and lifetime warranties on many jobs.
Why Homeowners Recommend Us
expertise
"Nelson quickly found our lines weren’t sufficiently insulated, added insulation, and gave clear next steps."
professionalism
"Miguel’s inspection and recommendations were thorough and professional. I even joined their service plan."
Where We Work
What areas do you serve for insulation services?
We serve Northern Virginia, including marquee cities like Alexandria, Arlington, and Fairfax. See the full service list below for complete coverage.
Northern Virginia
Alexandria, VAArlington, VAFairfax, VA
Complete Service Area:
Bristow, VAHaymarket, VAHerndon, VADumfries, VAAldie, VAMcLean, VAAlexandria, VAGainesville, VASpringfield, VAAnnandale, VAReston, VAFairfax, VAManassas, VABurke, VAFairfax Station, VACentreville, VAAshburn, VAChantilly, VAPurcellville, VAWoodbridge, VASterling, VAArlington, VAOakton, VAVienna, VAMiddleburg, VAClifton, VAFalls Church, VALeesburg, VATysons, VAGreat Falls, VA