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Dennis Heating and Cooling

5.0 (3 reviews)

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9 months ago

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DeKalb Mechanical

DeKalb Mechanical

(5 reviews)

I needed a new A/C unit and had a couple of issues with a very old furnace. I have always received…read moreprompt, courteous, and high quality service. Highly recommend.

This is my first review, EVER: (Once upon a time we had the Yellow Pages to help us find reputable…read moreservices....Uncle Ted provided reviews!) DeKalb Mechanical has serviced my furnace 3 times in the 6 years since I've owned my home, and this week assisted in a chimney replacement. I chose DeKalb Mechanical because the brand new furnace had been installed by them before my purchase. Andy & Charles have always listened patiently to my frantic description of the problem and sent repair technicians within the day. The techs are consistently courteous and knowledgeable and pretty good about cleaning up after themselves.. The final charge always seems high to me - they're probably competitive - I'm "old", living on a fixed income, and think any service costing more than $200 is too much! I've been particularly crabby these last two weeks when I finally established that my various furnace issues have most likely been related to a roof leak adjacent to the chimney. (Had the roof repaired in 2019!) The first estimate blamed the flashing, and bid $2000 for the flashing and a plywood/shingles replacement. A second estimate with a different roofer found NO issues with the flashing but said there was no cap - estimated charges $400. (I liked the 2nd bid better, but even I could see the flashing was rusted out.) Finally, the first contractor proposed replacing the brick chimney & flashing with a B-vent, requiring the coordinated assistance of my HVAC people - the best estimate was 2 grand for the roofer and not more than $1000 for the furnace folks. My final charges:$2850. I was fuming when I completed the review - assigning only 2 stars. (I've spent thousands of $ on roof repair and furnace servicing and the leak was probably present before I bought the home!) But that is NOT THEIR FAULT!! Before the ink could dry on my review Nathan, DeK Mech's man that oversaw the project, was at my door to find out what he (they) did wrong! Nothing. They did nothing wrong. They did it ALL RIGHT. Arrived an hour before originally scheduled, performed their work efficently and worked as a team with the roofers. I'll be calling DeKalb Mechanical this fall before I start the furnace for the season. Keeping my fingers crossed!

Ron's Heating & Air Conditioning - Temperature of the room from Ron's heating coming out to see the issue.

Ron's Heating & Air Conditioning

(7 reviews)

The technician, Dennis arrived right on time. He checked & cleaned my furnace preparing it for the…read morewinter. Dennis was kind enough, since I was a new homeowner to answer all my questions, make recommendations on filters and review my thermostat with me. He even provided & put in new batteries in the thermostat for me. Super experience, very affordable. I highly recommend Ron's Heating & Air of Sycamore.

Everything is the customers fault with this company. The owner talks to you like you're beneath…read morethem when you question their work or judgment call. You are right I am not a expert in heating and cooling that is not my profession. I hired another company turns out there was a leak in the fiberglass tape that caused the issue. Ron's heating blamed the builders saying not enough insulation or etc. Well you're wrong. You guys come to my house for 10 minutes . Yes it's on camera you can say different but it shows when you stepped in the doors and drove off. Total 12 minutes. You guys want to charge me a diagnostic fee FOR WHAT? You guys didn't diagnostic the issue another company did within 30 minutes. Get a second opinion before hiring this company because they are a one sided company and that side only Benefits them. I have my newborn room with improper heat coming into the room. It's 61 degrees when the house is set to 70 degrees and they blame the builders when it was due to their issue that they didn't even diagnose another company did. JOKE of a company. I tried paying the diagnostic fee that I honestly shouldn't because they rushed and didn't even spend the time to figure out the cause. They wanted to charge me a 3% fee for a debit card. Then they tried to charging me for a visit the the prior owner did and never collected on me. The owner wife was trying to pull a fast one on me then said ohh sorry I didn't realize it was a different name. Luckily I asked my total before providing my debit card number

All-Star Heating & Air Conditioning

All-Star Heating & Air Conditioning

(23 reviews)

After getting ripped off by other HVAC companies for years, I finally found Greg at All-Star. He…read moresomehow always squeezes me in when I have a problem, even during busy, bad weather events (other places would schedule me a week out, knowing that my furnace wasn't working on the coldest day of the year). His prices are unbelievable compared to theirs, too (about 1/3 of what I was paying elsewhere). AND he makes me feel secure and comfortable. He explains how the furnace works (or should work) and shows you exactly what is wrong. This guy (and his team) is so honest and worth every penny.

I had called these guys and talked to the girl about my unit, said no worries set a time to have my…read moreunit looked at, she said no charge to look and then would tell me what was wrong and if i wanted to have him fix it , he could do it then. The owner came to our house dissapeared for close to 45 min downstairs with another guy, and as all our secuirty shows no one went to check outside the unit.. He said when they were done,the outcome said id need a new compressor, which was around 2 thousand , i said no thank you,, and he said ok it will just be the 95 for the visit i said im not paying a thing, your staff told me it was no obligation, so im not paying i showed him the door. well it comes to find out i called another placed and the total to fix the issue was 180.00 running now like a champ.. unfortunately the issues dont end there. i was so taken back for the bait and switch i called them and said take my name off the lists. I now have called 3 times and still i continue to get marketing material, and i literally told the lady if i continued to get their material i would write a review ,, and so i am, i also said i will contact the attorney general, you cannot harass a customer if they do not want services and demand to be taken off the list you MUST comply. this is a horrible company, im glad i have others moving in with us that are Hvac handy, all these people in the service field are shady

Dennis Heating and Cooling - hvac - Updated May 2026

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