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4.5

(116 reviews)

Top-rated heating and air conditioning pros.

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Avatar for All Service Professionals Heating, Cooling, Plumbing & Electrical, LLC
All Service Professionals Heating, Cooling, Plumbing & Electrical, LLC
5.0(
5
)

Serving Duluth, MN and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

At All Service Professionals,\n\nwe understand that homeownership can sometimes throw unexpected curveballs. Whether it's a clogged drain, a dip in temperature, or a flickering light, these inconveniences don't have to last.\n\nAs your trusted home service professionals, we're here to bring peace of mind and restore your home's comfort quickly and efficiently. \n\nDon't hesitate to call!\n\nWe're here to bring peace of mind and restore your home's comfort.

project photos
10 neighbors recently requested a quote
Avatar for Northstar Mechanical Services, LLC
Northstar Mechanical Services, LLC
4.6(
79
)

Serving Duluth, MN and surrounding areas

In business since 1999

Free estimates

Emergency services offered

"Very polite young men worked on the project, and left the basement cleaner than when they began. Excellent service, arrived on time, and were finished approximately when they indicated they would."
Response time1 day
3 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)

Serving Duluth, MN and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"Mr. Ferrell first connected his computer to my computer via internet and worked for quite a few hours trying to determine what exactly was wrong. The next day he continued working from his computer for several hours. He determined he would have to have my desktop tower to complete the repair. He and my son met in Huntsville to exchange the tower. He then cleaned up a lot of what was wrong and reloaded Windows 10. He deleted the D: drive which had way too much memory allotted to it. The tower was returned and I plugged it all back together and it is working better than it did when I first purchased it. I would use him again and I recommend him highly to anyone needing computer updating and/or repair. His work is warrantied and he is very personable, knowledgeable, and helpful."
2014 Super Service Award Winner!
Additional Photos
Recommended by97%of homeowners
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Heating and Air Conditioning questions, answered by experts

Yes, you can put an AC unit on the roof of your home or commercial building. For proper installation, you’ll need to ensure the roof surface is flat, it’s accessible for maintenance and cleaning, and an AC installation pro agreed that your home is a candidate for package units. Don’t forget to consider the climate in your area, as homes that experience frequent tropical storms or hurricanes may not benefit from this type of system.

While 72 degrees is a comfortable setting for many people, it’s likely not the most efficient temperature setting for your air conditioning unit. By pushing the temperature up to 75 or 78 degrees, you stand to save money on your energy bill. That said, these temperatures may be too warm to be comfortable for some people and are definitely too warm for most people to sleep comfortably.

While Freon is mostly odorless, a Freon leak will produce a faint chloroform-like smell. Some people find that Freon's odor has a subtle sweetness to it. Some telltale signs of a Freon leak beyond odor include ice crystals on your evaporator coil, bubbling sounds, and hissing noises.  

The size window AC you need depends on the BTU and the size of the room you’re cooling. For a room with 8-foot ceilings, look for about 20 BTU per square foot of the room. For example, a 12-by-12-foot room should have an air conditioner with 2,880 BTU. You can buy something slightly more powerful, but don’t overshoot the BTU for a small room, or you’ll waste energy and have higher bills.

Whether an HVAC damper should be open or closed depends on the season, the zone it controls, and the temperature in that zone. In the summer, open upstairs dampers and close lower-level dampers to get the most efficient cooling possible. In the winter, do the opposite. Cool air will naturally flow down to lower levels, while warm air will rise. This keeps your system from working harder and helps prevent common AC problems.

The Duluth, MN homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.