Josh came out and did a diagnostic for my residential system that was not providing cool…read more He went above and beyond to let me know what the issue was. He also looked at the existing supply/return trunks, registers, calculated sq footage, air handler, ect. to evaluate that my system was loosing cfm which translates to less efficiency and higher heating and cooling costs. He produced estimates with multiple options and clear cut solutions to rectify the issues. Josh and his team are professional and honest. Josh is also is one of the few HVAC pros that, if services are used, put the diagnostic fee towards the work order adding additional value. Thanks Bob

I received an estimate from Josh M., AirAdviserDE.com, for installation of a ductless mini-split…read moreunit. Josh is a thoughtful, experienced, professional. He has researched alternative models and provided the reasons he goes with the brands he recommends. I chose Daikin and I think he gave me a great product, and great service at a reasonable price. I was also impressed with the quality of the installation. The unit and cables, etc., were carefully laid out so as to maintain a good appearance. Really impressive! Thanks Josh!

They came promptly, but they said I needed a complete new air conditioning system with the latest…read morerefrigerant. Of course it's always nice to have a complete new unit but I didn't need one. My problem was solved by another company that added some refrigerant which solved my problem at a fraction of the price. .

So far, they have been out to my home twice. Once to service my heater, and then to clean my air…read moreducts. They show up when they say they will, are always on time, and are very nice and professional. They are on top of everything and I didn't get the run around. I have been very happy with them. I also appreciate that they take the time to really explain thing to me so I highly recommend them.

We had an issue with our 16 year old heater. Several people recommended Ace, so we called. They…read moretold us someone would be out between 10a and 1p. Joe and Anthony arrived shortly after 10 and were awesome from beginning to end. We decided to get a new furnace. Joe emailed and said they'd be at our house at 730a the next day. At 730 Joe and Anthony arrived. The new Bryant heater and Honeywell thermostat were installed flawlessly. We got the rundown on the new system and registered the product. The guys were done before 10a. These guys were personable and did a great job. We will be calling Ace in the future for our HVAC needs. A++

Our air conditioner went out and we called at 8:30 am Monday Morning. They were here very quickly…read moreand the air conditioner unit was working by 9:15 am. They checked the whole HVAC unit and since it is over 15 years old suggested we have a review of the system at a later date. They ensured we had a clean filter and cold air! We will have them return for a full HVAC evaluation. Thank you ACE!!!

Liam provided a professional service for me and did a great job. The price was fair and the repair…read morewas executed perfectly. A+

On 02/12/25 , A tech came to my home and we talked about the on going issue I was having with the…read moresystem. He noted on the invoice I was not happy with the system and stated he and the service manager would be back out the next week to check the system. As of 02/27/25 I have not been by contacted by anyone from this company. I have made multiple calls about this system and it is still not working correctly. To have this system put in was not cheap , and it is still costing money. I just want the system fixed so I can have proper heat in my home and an electric bill that is not almost $500.

Oh my goodness I can't believe what awesome people these folks are. Phil is our rock star. He went…read moreabove all expectations. I'm here in WA state and early this morning my mother in law calls and is just beside herself because there's a leak or something somewhere and water was coming into the basement. My father in law wanted a specific plumber and I couldn't find their number so I actually called these guys and Phil answered, he was helpful and even gave me the number to the other company knowing that they were looking to hire someone else and that showed such character. I thanked him and proceeded to give the parents the number. As the morning progressed I gave my mom in-law Phil's number and he's currently taking great care of them. All this help from a stranger nearly 3,000 miles away. I'm so so thankful that there's still seriously wonderful people out there.

Tri Elite Advisors was recommended to us through a personal friend who had used them. Phil came out…read moreand prepared an estimate with a very reasonable price. Shortly after they came out and installed a new air conditioning and heating system. The system has been working excellent. Phil and his staff were very knowledgeable and professional. We also recommend Phil and Company to relatives and friends. Phil takes pride in his work. I would not use anyone else. I highly recommend Tri Elite Advisors.

What a crook of a company. I scheduled an appointment for 9:00 AM, yet the technician showed up at…read more8:20 AM. At that exact time, I was getting ready to call and cancel because I had already troubleshooted the issue myself and confirmed my system was working normally, so the service was no longer needed. When I originally called, the only fee mentioned was a $120 diagnostic fee. There was no mention whatsoever of a no-show fee or a travel fee. Now they are trying to force me to pay a $59 travel fee, even though the technician arrived before the scheduled appointment time. To make matters worse, this fee was not explained to me until after they had already shown up. Completely unprofessional and misleading business practices.

this my third experience with this company. The service is amazing. They have answered every call…read more A water leak on the weekend they were at my house within an hour. I have dealt with several companies over the years and none of them can hold a candle to this company. They deserve every one of those five stars.

We recently required service at my son's for a cooling issue. I live near Affordable and stopped…read morein. I spoke with the owner and secretary, who addressed the issue quickly. They contacted my son at that time for a time to be at his home. Service was there the next morning before 9:00 am. My family has used Affordable for over 10 years and never have been let down. In finishing the service is Great!!! The cost is appreciated and Affordable. Joe B New Castle DE

Nate always provides outstanding service and takes time to explain the situation. Prices are…read morecompetitive.

TL;DR: they refused service to long-time clients because we had the audacity to ask for a measly…read more$200 off their HVAC bid. Clients of theirs for years, no complaints. When we needed a new HVAC, we got an estimate from Frederick that was $1000+ over the estimate from another long-time, reputable local company. But out of loyalty to Frederick, we politely asked if they would shave $200 off to come *slightly* closer to this other quote. We actually hate haggling, but had read that you're expected to, for new HVAC. Can't hurt, right? They responded. Had they just said, "No, that's not possible due to XYZ," we would have hired them and paid the full price. But instead the rep explained why it wasn't possible, and then, in a polite but insulted tone, *rescinded their bid*, essentially telling us they would not be doing the job either way. All over a request for $200 off a $7000 job. We were stunned. Needless to say, we haven't called them for anything since, and we're the kind of easy-going, non-complaining customers contractors usually like to have. We got our HVAC at the other place and it's running fine, a few years later. Owner, if you're reading this: I get that you're doing well enough that you don't need to accept anyone's attempt to haggle, and can charge a lot more than the competition. Good for you. I'm purposefully not giving you a 1 star because I don't believe in trying to hurt someone's business. But talk to your guys about not reacting in a personal way to long-time customers. The reaction we got was really uncalled for. Maybe the guy was having a bad day, but you have to leave that behind when you're interacting with a customer, especially an established one. He could have just said "No, we can't do that, but let me know if you want to proceed with us." We would have.

Our original HVAC company said my Carrier furnace was broken. I called this company to get a second…read moreopinion and they agreed with the first company. Alexis, the very nice salesperson, gave me a quote on three systems, and helpful information to review. We chose Joseph Frederick & Sons because they are a certified Carrier provider and they only install Carrier systems. All of the HVAC professionals were friendly and explained the system well. The cleaned up after themselves.

Excellent and timely service, friendly people. Aire Serv has helped us out a few times and always…read moredo a great job. I highly recommend them for any HVAC needs.

Chuck came out to diagnose and repair an issue on ourA/C. I felt that the pricing was fair, and he…read morewas knowledgeable. The problem was resolved quickly. A++

I was very pleased with Tom ......he did a great job to fix my AC problem…read moreI will always recommend him for all my needs in the future

After several estimates and many weeks of trying to decide which HVAC company to use to replace our…read moreair condition and heating system, we came across Hillside Oil Heating and Cooling and we're glad we did. After consulting with the Service Manager who was patient and answered all our questions, we felt comfortable in our decision to go forward with this company. In addition to their good reviews and ratings, their price was even better than the competition. The workmen were experienced, efficient, knowledgeable, on time and very neat and the installation was done in one day. I highly recommend this company if you're looking for good value and high quality service.