Serving Washington, DC and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1982
Free estimates
Emergency services offered
"The Air Conditioner service man who is Walter Gil gave excellent service for the Air Condition, He had great rapport with the customer and answer all the questions that I asked. I rated him five stars for his services."
+6
Serving Washington, DC and surrounding areas
Approved
Super Service Award Winner
In business since 2003
Free estimates
Emergency services offered
"Avery Savage, the Pro sent by Angi was extremely honoest and very proficient. I already knew what was wrong with my HVAC system so I had already purchased a replacement thermostat. I have known other technicians who have tried to get clients to purchase entirely new systems when only a thermostat was needed. Avery was very honest and excellent job access and fixing the problem. I would use this company again and highly recommend Mr. Savage!"
+45
Serving Washington, DC and surrounding areas
Approved
In business since 2001
Free estimates
Warranties offered
"I had a 20+ year old air conditioning system and didn't want to nurse it through another summer season so I started looking for a replacement during the very polar cold month of February 2019. Of the three bids I received, I was most impressed with Polar Bear Air Conditioning & Heating Inc's responsiveness, professionalism and price. Three days after I signed a contract, Team Polar was at my house at 8:30 am and by 1:00 pm I had a new air conditioning system! The team worked fast, was pleasant, provided updates and handled the one problem encountered, the condenser wouldn't fit through the front door of my old DC townhouse, with grace and humor as they hauled it around the block and in through the back walkway. I'm looking forward to having a cool, reliable and energy efficient system this summer and would definitely recommend Polar Bear Air Conditioning & Heating Inc. to anyone looking for a new system. Thanks again Polar Bear Air Conditioning & Heating Inc!"
Serving Washington, DC and surrounding areas
Approved (Corporate)
In business since 1981
Free estimates
Emergency services offered
"Great service. Very thorough. Called them again to do an HVAC service. Very satisfied with FH Furr. I highly recommend this company."
Serving Washington, DC and surrounding areas
Approved
In business since 1936
Free estimates
Emergency services offered
"Checked Angie's List and saw a very good review for McCrea Heating and Air Conditioning, plus a special promotional coupon so gave them a try. Service tech (Mike) made a multi-point inspection. He found and corrected some minor issues and added coolant. Fortunately nothing major was required. He was on time and courteous, and readily answered the questions I peppered him with. A very positive experience."
Serving Washington, DC and surrounding areas
Approved
In business since 1967
Free estimates
Emergency services offered
"It was good. They have a lot of options. They did 2 hvac on me. They were professional and on time. They provided a photo of the technician so I knew who was coming"
+13
Serving Washington, DC and surrounding areas
Approved (Corporate)
In business since 1903
Emergency services offered
Warranties offered
"we had a leak problem and the tech came and looked over our equipment, fixed the problem and left. It cost us nothing and we have had their home heating service contracts for over 20 years. They have NEVER ONCE not shown up or not helped and in the two furnace emergencies we had--they were here with in 1hr.
We are very happy.
"
Serving Washington, DC and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
"We are very happy with HVAC service. Compare to other companies they are much cheaper then others and provided quality work/services."
Serving Washington, DC and surrounding areas
Approved
In business since 2012
Free estimates
Emergency services offered
"We needed to replace one of our HVAC units and we had a great experience. This is the second unit (we have a two-zone house) that JDL Replaced. Both times we had Carlos lead the work. He was friendly and courteous. He and Rudy did an excellent job with the work, cleaning up, and making sure the system worked properly before leaving. They put down cloth to protect our carpet and are where the unit is. We will continue using JDL Services for ongoing maintenance and other work like this in the house."
+73
Serving Washington, DC and surrounding areas
Approved
In business since 2001
Credit card accepted
Customers say: Quick response
"Before I decided to hire Haywood Mechanical, LLC, Mr. Haygood patiently answered all my questions via email concerning his rate to inspect a central air system and what the inspection included. Although I forgot my appointment, Mr. Haygood was very understanding and rescheduled for another day. Mr. Haygood arrived on time, was very pleasant, and took his time testing the central air system, as well as the registers and air vents. His rate was competitive and I will use his services again."
A standard blower door test takes between 30 minutes and one hour to complete. The process involves setting up specialized equipment in your doorway, running the fan to create pressure differences, and taking measurements throughout your home. Additional services like thermal imaging or detailed leak detection will extend this timeframe. The technician will also spend time explaining the results and making recommendations based on their findings.
Preparation involves turning off all combustion appliances, such as gas furnaces and water heaters, for safety. Secure all exterior doors and windows, but leave interior doors open to allow airflow throughout the house. Close fireplace dampers and cover any ashes to prevent them from being drawn into living spaces. Clear access to potential inspection areas like attics and crawlspaces, and inform everyone in the household about the test to prevent accidental door openings during the process.
Older homes often benefit most from blower door testing because they have more air leakage points than newer construction. The test can pinpoint specific areas where relatively inexpensive improvements will yield significant energy savings.
Many homeowners of vintage properties report noticeable reductions in drafts and more consistent indoor temperatures after addressing issues identified during testing. The potential utility savings often recover the testing cost within a reasonable timeframe.
New construction must meet increasingly stringent energy codes that specify maximum allowable air leakage rates. Meeting these standards requires careful attention to air sealing details during construction.
Success depends largely on properly installing air barriers, thoroughly sealing around penetrations, and quality control throughout the building process. While achieving code compliance is challenging, builders who implement systematic air sealing protocols succeed in meeting required standards.
It's best to schedule a follow-up test after completing all recommended air sealing and insulation work. This allows you to verify the effectiveness of your improvements as a complete package. Allow sufficient time for all sealing materials to cure properly—often a few weeks after completion. The verification test provides documentation of your home's improved performance and confirms you've addressed the issues identified in the initial assessment.
From average costs to expert advice, get all the answers you need to get your job done.
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