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VIOMAX HEATING AND COOLING is an HVAC business; on Angi it describes itself as handling HVAC work in Wallingford and the surrounding areas, with 15 years in the business. Its Angi page shows 4.5 stars from 34 ratings, and its BBB grade is A+. In a 2018 review, a customer said Steve diagnosed an air-conditioning problem within 10 minutes, ran to a parts store and installed a new capacitor, and was done the same day. A 2018 customer said Steve found a bad thermostat on an a/c and was able to get one and install it. A 2017 customer said Steve diagnosed and fixed a furnace problem when others couldn't. A 2017 customer said the company replaced their AC and was very happy with the work. A 2018 customer said they paid 420 dollars over two visits and the heating still did not work, so they called another company. A 2018 customer wrote that the heat upstairs stopped again after two visits and new furnace parts, with $600 spent; that customer said the technician, due between 10 and 11am, showed up between 4pm and 5. A 2017 customer said the company bought a replacement humidifier valve but never installed it, and phone calls to the company were not returned. A 2018 customer said he was knowledgeable once he showed up, but getting in touch with him afterward was very difficult.
He came twice this week to fix my heating. Unfortunately, and despite the 2 visits and the 420 dollars I paid, the heating continued without working so I had to call another company. They gave me another diagnosis and new parts that have to be changed that would mean an even greater expense. The new company even showed me some of the bad work he did. I will have to pay a new company and new parts to fix my problem.
We were very happy with Steve, he was both friendly and very professional. He diagnosed and solved our heating problem within hours of our calling. Would recommend him with confidence.
Steve is great, we use his service annually and he is always on time and professional!
He responded very quickly and explained everything that was going on. He was really good about feedback and I would strongly recommend him.Rebeka ..
Communication does not seem to be their strong suite. Once he shows up he is knowledgeable and able to get the work completed, but once he leaves trying to get in touch with him is very difficult. I also requested a quote for a different job and he still has not gotten back to me. I am still waiting for him to provide me a receipt.Elizabeth ..
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1 change recorded β last scanned Oct 14, 2026.
Typical Greater Boston range for this kind of work, from regional averages β not a quote from VIOMAX HEATING AND COOLING. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 β $11,400
Typical HVAC project around $8,200
Transparent diagnostics5.0
Same-day and weekend calls for burst pipes and lost heat5.0
Broad plumbing and HVAC range5.0
Repeat, years-long customers5.0
Water heater and boiler installs5.0