Business ProfileHVAC Companies in Alexandria, Virginia

Krafft Service Corporation

Taking Calls in Alexandria Today 4.90 (1,681 reviews)(703) 751-7510

Krafft Service Corporation

Krafft Service Corporation provides residential and light-commercial HVAC services in Alexandria and surrounding areas. Founded by John Krafft in 1940, the company began as a sheet-metal shop in downtown Washington, D.C. Its offerings include high-velocity small-duct systems.

Last Updated October 2, 2026.

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Business Highlights

The company is family-owned and operated.
Its service technicians are NATE-certified.
The company is an authorized American Standard dealer.
It says it services all makes and models of heating and air-conditioning systems.
It provides a one-year parts-and-labor warranty with every HVAC service.
It says it offers customers a range of choices without misleading or upselling them.
The company lists license #2701020696.

Service Area

Alexandria, Arlington, Fairfax, McLean and Woodbridge, plus nearby areas.

Local Business Taking Calls

Krafft Service Corporation is one of 8 HVAC companies ProsGrade lists in Alexandria, Virginia.

Taking Calls

Taking calls through ProsGrade

Listing details

9 services listed, including Air conditioning, Heat pumps and Furnaces. Open 24 hours, 7 days a week. Rated 4.9 from 1,681 reviews.

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Service information
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Published local profile

How This Business Compares

How Krafft Service Corporation compares with the other 7 HVAC companies on ProsGrade in Alexandria, using public Google ratings and review counts.

Ranks in the top half of the 8 Alexandria HVAC companies on ProsGrade by Google rating and review volume.
Rated 4.9 on Google, at or above the 4.9 average of other Alexandria HVAC companies on ProsGrade.
Has more Google reviews (1,681) than 6 of the 7 other Alexandria HVAC companies on ProsGrade.
One of 8 Alexandria HVAC companies on ProsGrade rated 4.7 or higher from at least 10 reviews.

Trust Signals

24/7 hours are listed on Google; call to confirm current emergency availability.

Services Covered

9 services

Air conditioningHigh-efficiency air conditioners
Heat pumps
FurnacesGas and electric furnaces
Ductless mini-splitsSingle- and multi-zone setups
High-velocity small-duct systemsCompact systems for older homes or tight spaces
Indoor air qualityAir purifiers, humidifiers, dehumidifiers and ventilation systems
Commercial HVACBusinesses, schools and churches
Smart thermostats and zoning systems
HVAC maintenance

Reviews

What customers say

Customers praise knowledgeable, courteous technicians and prompt service. One customer appreciated a technician explaining the work; a furnace-replacement customer valued multiple options with costs and an installation within 24 hours.

Customer Reviews

Wendy Fischer

We’ve been customers of Krafft for 25 years. Every technician has been knowledgeable, honest, friendly, respectful and prompt. The office is a breeze to deal with. We’ve always had excellent service from top to bottom.

Doris MacDonald

Always reliable and on time, and ready to answer questions. They come twice a year for maintenance and will come if there's a problem. I've been working with this company (First A1, now Krafft) for over 20 years and they have done everything from routine maintenance to repair/replacing my old system.

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michael smith

Same day availability. John was friendly and informative about my issue. I was previously told that I needed a furnace replacement. In a time of so much scamming, he was reassuring. Appreciated him…reflects the company’s ethics

Corie Mboh

I called Krafft to get an estimate on a furnace replacement, after my 23 year old unit exhaled its death rattle last breath. Conrad came the next morning, determined CPR wasn't possible and called time of death. He measured for the new furnace and came back within 24 hours to install. Pricing was more than fair. I was given multiple options for replacement with appropriate costs. Conrad and the two gentleman that accompanied him for install were professional, respectful, and efficient. I will use Krafft for my HVAC needs in the future!!

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Dona G

I cannot say enough about the excellent service I received today, and with each visit to my home for HVAC and AC maintenance. Pablo is so efficient and knowledgeable. He answers my questions and explains what he doing, all the while being courteous, professional and friendly. It is clear that he is an expert in his field. I highly recommend Krafft Service for your furnace and a/c. I have had nothing but excellent service from them for years, and I cannot say enough about Pablo. And, they do not try to upsell you every time they come to your house like so many others do these days!

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