Serving Hazel Park, MI and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1979
Free estimates
Emergency services offered
"This company went above and beyond. From the estimate to the install of both a new furnace and air conditioning unit quickly after the estimate. We had been without heat for 4 days in December in Michigan. Glad to sleep in a home with heat again."
Serving Hazel Park, MI and surrounding areas
Approved
In business since 2013
Free estimates
Credit card accepted
We specialize in providing top-quality heating, ventilation, and air conditioning services tailored to your unique requirements. Our skilled technicians are dedicated to delivering reliable solutions that ensure your comfort and satisfaction.\n\nAfter more than a decade of working in the HVAC industry, we saw a growing need for a company that put honesty and people first. Built on a foundation of hard work, integrity, and family values, we started this business to offer Metro Detroit homeowners and businesses a better experienceno pressure, no shortcuts, just reliable service from technicians who treat every customer like one of their own.\n\nWe service and install all major HVAC brands, giving you the flexibility to choose the right system for your home or business. Not sure what brand is best for your needs? Were here to guide you with honest, knowledgeable recommendations.
Serving Hazel Park, MI and surrounding areas
Approved
In business since 1983
Free estimates
Credit card accepted
"The entire process went great. The office staff was wonderful even moved up my repair an entire day! Mike, my tech, was awesome took care of the not so simple problem in the same visit even checked on my thermostat. He was great at explaining everything including what I need to wait to do until tomorrow. Price was very reasonable. I would totally recommend them or use again if needed."
Serving Hazel Park, MI and surrounding areas
Approved
In business since 2025
Free estimates
Offers commercial services
"Safe air was wonderful to work with with they came in on time and made sure they did a great job we will be using them again in the future"
+3
Serving Hazel Park, MI and surrounding areas
Approved
In business since 1996
Emergency services offered
Warranties offered
"Very responsive to critical need to fix air conditioning during the heat wave. Courteous, friendly and professional. I highly recommend Harriman."
+3
Serving Hazel Park, MI and surrounding areas
Approved
In business since 2015
Emergency services offered
Warranties offered
"Thank you for the fast service and reasonable price , I had emergency call , hot water heater was installed the same day , I will recommend family and friends"
Serving Hazel Park, MI and surrounding areas
Approved
In business since 1998
Free estimates
Emergency services offered
"I contacted Greg after I turned on the heater for the first time and noticed a burning smell coming from the ducts. While they were booked out three days in the future, Greg found a way to work us into the schedule the same day. Within hours, they had the problem diagnosed and had located the parts needed to fix it--all at a fair and reasonable cost. Additionally, they offered advice on how best to maintain our air conditioning unit. I would highly recommend them and will be calling them again with future work."
+9
Serving Hazel Park, MI and surrounding areas
Approved
Free estimates
Emergency services offered
Small jobs welcome
At Smart Zone Heating & Cooling, we provide reliable, high-quality heating and cooling services for both residential and commercial customers. Our goal is simple: deliver dependable HVAC solutions that improve comfort, efficiency, and long-term performance.\n\nAs a licensed and insured HVAC contractor, we specialize in professional installation, repair, and maintenance of heating and cooling systems. Whether you need a new furnace installation, air conditioning repair, system replacement, or preventative maintenance, we focus on doing the job right the first time.\n\nWe take pride in offering honest recommendations, fair pricing, and high-quality workmanship. Our team understands that HVAC systems are one of the most important components of any home or business, which is why we work efficiently, communicate clearly, and treat every property with care and respect.
Serving Hazel Park, MI and surrounding areas
Approved
In business since 2006
Emergency services offered
Small jobs welcome
"My A/C was blowing warm air. They came in and fix the problem promptly. Didn't take very long. Good price, very professional. Greatly satisfied."
Serving Hazel Park, MI and surrounding areas
Approved
In business since 1985
Emergency services offered
Warranties offered
"Timely response to help repair my elderly mother's AC during a terrible heat period. Polite. Professional. Fair price. Effective service. I would definitely use this company 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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