AC Replacement & Installation in Sterling
Serving Northern Virginia & Maryland Customers Since 1990
Are you tired of dealing with an air conditioning unit that fails to maintain a comfortable indoor temperature? Is your current AC constantly breaking down or in frequent need of expensive repairs? The best solution might be replacing your current AC unit with a newly installed one. When you need AC installation in Sterling, Donmar Heating, Cooling & Plumbing is who you call.
Our expert technicians from are committed to helping homeowners throughout Northern Virginia and Maryland experience the best in indoor air quality! We proudly offer emergency services 7 days a week. Give one of our offices a call and we can come out to your home and get your indoor climate back to normal in no time, even if we have to do a full system replacement and upgrade.
A few reasons why we’ve been making loyal customers since 1990:
- Special financing options with approved credit
- Flat-rate pricing for your peace of mind
- Seasonal coupons
- Flexible service maintenance agreements
- Countless happy customers
- Emergency services available 7 days a week
- NATE Certified HVAC experts
Signs Your Air Conditioner Needs to Be Replaced
There are some telltale signs that may indicate that your current cooling system should be replaced instead of extensively repaired. Though overall age and use of the unit can contribute to decreased performance or energy efficiency, other red flags may indicate that a unit needs to be replaced as soon as possible.
When an AC system replacement is encouraged:
- Unit fails to maintain comfortable indoor conditions
- Leaks or strange noises coming from the unit
- Excessive energy bills or sudden increase in monthly cost
- Frequent repairs with no signs of performance improvement
- Potential cost of repair exceeds the cost of replacement
Time for Replacement? Call Us for a Quote!
We proudly serve customers throughout Northern Virginia and Maryland, including Sterling, Montgomery County, Prince George’s County, Prince William’s County, and Loudoun County. You can check to see if we service your community by viewing our service areas page. We look forward to helping you with an AC replacement or new installation that keeps you and your family cool all year round!
Schedule an appointment by calling our offices at (703) 457-8676. A friendly team member can provide a comprehensive estimate based on your unique needs and budget.
Helpful Resources
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Flat Rate Pricing
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Why Choose Donmar?
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Special Online Offers
Don't Just Take Our Word For It!
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"Your customer service is outstanding and everyone that I spoke to or met in person speaks to the nature of your company."
Your customer service is outstanding and everyone that I spoke to or met in person speaks to the nature of your company.
- Kathy -
"Donmar Company defines customer service excellence to a higher level."
Donmar Company defines customer service excellence to a higher level.
- Scott H. -
"Great company — replaced my furnace very efficiently and effectively. "
Great company — replaced my furnace very efficiently and effectively.
- Chris C. -
"They are honest and straightforward with their recommendations and always give us various options. "
They are honest and straightforward with their recommendations and always give us various options.
- Samia K. -
"I am thankful for Paul’s service and HIGHLY RECOMMEND Donmar Company to anyone with an HVAC issue!"
I am thankful for Paul’s service and HIGHLY RECOMMEND Donmar Company to anyone with an HVAC issue!
- K.J. -
"Really appreciate your crew. They answered all my questions and concerns, and the work appears to be impeccable!"
Really appreciate your crew. They answered all my questions and concerns, and the work appears to be impeccable!
- Jeffrey N. -
"This company is very attentive to the customer and respond to their concerns quickly."
This company is very attentive to the customer and respond to their concerns quickly.
- Natalie M. -
"We've been pleased with the units, but its your employees that have made the real impression - they've been uniformly fantastic!"
We've been pleased with the units, but its your employees that have made the real impression - they've been uniformly fantastic!
- Kathleen
Creating Happy Customers Since 1990
Why We Are the #1 Trusted HVAC Company in Northern Virginia
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We Are On Time, Every Time
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Over 30 Years of Experience
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Affordable Service Management Agreements
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Quality Service with Honest Values
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Flexible Financing Options with Approved Credit
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Offering Free Estimates On HVAC Replacements
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NATE Certified Technicians
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Emergency Services 7 Days a Week