--- title: "Fong and Sullivan Heating & Cooling" description: "A homeowner called in July 2026 about an LG mini-split that was losing refrigerant. Fong & Sullivan got someone out quickly, found the leak in about twenty" doc_version: "2026-09-14" last_updated: "2026-09-14" --- # Fong and Sullivan Heating & Cooling **Trade:** HVAC / Heating & Cooling · **Address:** 76 Taunton St, Plainville, MA 02762, USA · **Phone:** (508) 456-9621 · **Website:** https://fongsullivanhvac.com/ · **Languages:** English **Rating: 4.8/5** (medium confidence) — from 113 reviews across 5 sources. 100% of sentiment-scored reviews read net-positive. Last 6 months: 40 reviews, 0 negative. ## The honest read A homeowner called in July 2026 about an LG mini-split that was losing refrigerant. Fong & Sullivan got someone out quickly, found the leak in about twenty minutes, repaired it, recharged the system and was finished inside an hour. Speed like that is most of what customers talk about — that, and the names: Justin, Matt, Joe, and Chris, the owner, who still shows up on jobs himself. The company runs out of North Attleborough across southeastern Massachusetts — Plainville, Franklin, Wrentham, Attleboro, Mansfield, Norfolk, Walpole, Medway, Mendon, Hopedale and Sheldonville — doing heating, cooling, heat pumps, ductless mini-splits, water heaters and ductwork, with emergency service around the clock. Its Massachusetts HVAC licence, 920-SM-B, is active, its Better Business Bureau page carries an A+, and the company says it is a Bosch Home Comfort PRO certified dealer, an LG Premium Partner and an authorised Oxbox by Trane installer. Heat waves are when people notice them. In July 2026 a customer whose AC had quit during one got it running after the crew took extra time to find the fault; another had Justin and Matt out fast in the same stretch of weather. A Mitsubishi mini-split that failed over a holiday got a visit as soon as they could reach it, with the owner's long list of questions answered on site. In May 2026 a total system replacement went in over a single day with a full crew, and the customer was walked through the finished system afterwards. They take the stubborn diagnostic work too. In February 2026 a homeowner whose high-tech system had been loud with air velocity for years, after several other HVAC companies failed to solve it, had Christopher Garcia sort it out. In January 2026 a technician spent two hours going through a system, found several things making it inefficient and expensive and fixed what he could that day; on another January call Justin phoned the manufacturer mid-repair to be sure the fix was right. In March 2025 a house burning far too much oil was cured by a thorough cleaning that Chris recommended. One thing runs through what customers write: they are told what is going on. Options get laid out, equipment sizing gets explained on site, and the final bill lands where people expected it to. If your system is down in a heat wave, or you want a mini-split or heat pump installed by someone the manufacturers certify, this is a straightforward call. Check first that your town is on their southeastern Massachusetts list, and ask what an after-hours emergency visit costs, since they offer one around the clock. **Strengths:** - Same-heatwave callouts — failed AC systems running again within days - Quick diagnosis — a mini-split leak found in twenty minutes - One-day replacements — full system swapped out by a whole crew - Hard faults solved — noise other companies could not fix - Named technicians — Justin, Matt and Joe recur across accounts **Concerns:** - Twelve-town area — southeastern Massachusetts only, not statewide ## Claims & citations Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication. - Massachusetts HVAC licence 920-SM-B is active on the state registry under Fong and Sullivan Heating and Cooling LLC _(confidence: high)_ - [State License Registry](https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page) — “MA hvac license 920-SM-B registry-verified active — registry holder of record: Fong and Sullivan heating and cooling LLC” - Carries an A+ grade with the Better Business Bureau and has been BBB accredited since March 2026 _(confidence: high)_ - [Better Business Bureau](https://www.bbb.org/us/ma/plainville/profile/heating-and-air-conditioning/fong-sullivan-heating-cooling-llc-0021-567429) — “Better Business Bureau grade: A+” - [Better Business Bureau](https://www.bbb.org/us/ma/plainville/profile/heating-and-air-conditioning/fong-sullivan-heating-cooling-llc-0021-567429) — “Listed certification: BBB Accredited Business (since 3/2/2026)” - Holds a 5-star average across 121 Google ratings _(confidence: high)_ - [Google](https://maps.google.com/?cid=5613233819847337354&g_mp=CiVnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLkdldFBsYWNlEAIYBCAA) — “Google: 5★ from 121 ratings” - Based in North Attleborough and serving Plainville, Franklin, Wrentham, Attleboro, Mansfield, Norfolk, Walpole, Medway, Mendon, Hopedale and Sheldonville, with 24/7 emergency service _(confidence: medium)_ - [Official Website](https://fongsullivanhvac.com) — “A residential HVAC contractor based in North Attleborough, MA offering heating, cooling, heat pump, ductless mini-split, water heater and du…” - [Official Website](https://fongsullivanhvac.com) — “Stated service area (self-reported): North Attleborough, Franklin, Wrentham, Plainville, Sheldonville, Medway, Attleboro, Mansfield, Norfolk…” - The company states it is a Bosch Home Comfort PRO certified dealer, an LG Premium Partner and an authorised Oxbox by Trane installer _(confidence: medium)_ - [Official Website](https://fongsullivanhvac.com) — “Stated certification/affiliation: Bosch Home Comfort PRO Certified Dealer” - [Official Website](https://fongsullivanhvac.com) — “Stated certification/affiliation: LG Premium Partner” - [Official Website](https://fongsullivanhvac.com) — “Stated certification/affiliation: Oxbox by Trane Authorized Installer” - Diagnosed a leaking LG mini-split in about twenty minutes in July 2026, then repaired it and recharged the refrigerant within roughly an hour _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pKaWVXaGFYM1l0TFY5aGNpMTZZV1ZJZUdsd0xVRRAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOjJieWhaX3YtLV9hci16YWVIeGlwLUE%7C%7C?hl=en) — “5★ I had an excellent experience with Fong & Sullivan. They responded to my call very quickly and were able to diagnose the leak in my LG mi…” - Turns out fast in heat waves — July 2026 customers had failed AC systems restored on short notice, one after the crew spent extra time tracing the fault _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2t4ME5YaEVVMFEzY21ac1RHOVVhVjl3WjBoakxYYxAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOkx0NXhEU0Q3cmZsTG9UaV9wZ0hjLXc%7C%7C?hl=en) — “5★ Definitely the best! They took extra time to figure out what the problem was and got my AC up and running during a heatwave. They go the …” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pCeVlsQnllSEIyVGxGTVMybHFkbFIzVlRaUGNYYxAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOjByYlByeHB2TlFMS2lqdlR3VTZPcXc%7C%7C?hl=en) — “5★ Justin is Fabulous! He and Matt came out quickly in a heat wave and repaired our A/C unit. Very professional, knowledgeable, and talent…” - Replaced an entire system in one day in May 2026 with a full crew, then walked the customer through the finished installation _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT21jMGNteGFjamgxWkdJeU5qaEthSE5pWms5ZlRWRRAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOmc0cmxacjh1ZGIyNjhKaHNiZk9fTVE%7C%7C?hl=en) — “5★ They are amazing. Came out as soon as I asked for a quote. Gave me a bunch of different options. Were able to complete a total system rep…” - Solved a years-old air-velocity noise problem in February 2026 that several other HVAC companies had failed to fix _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT21VNVJIWmpUVEp3WDFGb1VVUjNTMFExZDA1R1NGRRAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOmU5RHZjTTJwX1FoUUR3S0Q1d05GSFE%7C%7C?hl=en) — “5★ Christopher Garcia at Fong & Sullivan is absolutely outstanding. After several years of struggling with a very high-tech HVAC system that…” - Spent two hours reviewing one customer's system in January 2026, identifying multiple inefficiencies and addressing several the same day _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xKd2VUaFFaV3RaYjFWM1FWbEZUMHQ2V1hOaVJtYxAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOlJweThQZWtZb1V3QVlFT0t6WXNiRmc%7C%7C?hl=en) — “5★ Fantastic experience. I reached out to them yesterday and a technician was able to come today. He spent two hours doing a very thorough r…” - Calls the manufacturer mid-repair when needed to confirm the right fix, described by a January 2026 customer _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pBMVQwbFFkVWgxV1hOcU1rVlZSbFJCVDAxT2FXYxAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOjA1T0lQdUh1WXNqMkVVRlRBT01OaWc%7C%7C?hl=en) — “5★ Justin is the consummate professional. He showed up on time, diagnosed the issue, space spent considerable time explaining to my son and…” - Explains options and equipment sizing before work, including demonstrating the correct size equipment for a July 2026 customer _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT25OelZFWTJjMFZHV0dONFdUSnhXa3hMVm1OYU1sRRAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOnNzVEY2c0VGWGN4WTJxWkxLVmNaMlE%7C%7C?hl=en) — “5★ I’ve used so many different HVAC companies and finally found one I can stick with. Every time I have booked, they arrive when they said, …” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pRMlFWRjZZVUZOYVZwWmFEWnBRbGh3ZDB0b1pVRRAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOjQ2QVF6YUFNaVpZaDZpQlhwd0toZUE%7C%7C?hl=en) — “5★ The team at Fong & Sullivan was simply amazing. They were responsive, attentive to every detail, took the time to answer every question …” - Ductless mini-split and heat pump installation, including a June 2026 system installed with the owner involved _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT21WbWFHRjZaMGxTUlVGT05VMXRkMVJZV1V4YU5IYxAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOmVmaGF6Z0lSRUFONU1td1RYWUxaNHc%7C%7C?hl=en) — “5★ I recently had a ductless mini-split heat pump system installed by Fong & Sullivan Heating & Cooling LLC, and I couldn't be happier with …” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT21aSlJYYzNURzUxYlVkME9XTjRWMDVzUVU5QlkwRRAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOmZJRXc3TG51bUd0OWN4V05sQU9BY0E%7C%7C?hl=en) — “5★ Fast, expert repair of a minisplit with bad condenser. As usual!” - Annual maintenance and tune-ups, including spring servicing of older HVAC systems _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pGak5teEVSMGxQVHpSZlkySkNXV1ZhYm5ReldYYxAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOjFjNmxER0lPTzRfY2JCWWVabnQzWXc%7C%7C?hl=en) — “5★ Had our annual service completed and as expected F&S did an outstanding job. Work was completed quickly and efficiently. I highly recom…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT21OMVUwTk5MVk4wTFhJMFVtSjZVa1JvTlVRdGVIYxAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOmN1U0NNLVN0LXI0UmJ6UkRoNUQteHc%7C%7C?hl=en) — “5★ The technician Justin came right on time and performed the Spring maintenance and some minor repair to update our very old HVAC system wi…” - Heat pump troubleshooting — a March 2026 job improved air flow and sizing and replaced a defective valve on a system installed by another company _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xKdExUazFOVVppU0dOQk5EbEthVWw1U2t4eFZWRRAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOlJtLTk1NUZiSGNBNDlKaUl5SkxxVVE%7C%7C?hl=en) — “5★ The crew at Fong and Sullivan breathed life back into our heat pump. Their professional thoughtful approach to better air flow, system si…” - A March 2025 customer with excessive oil consumption was fitted into a busy season and had the problem solved by a thorough cleaning _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnTUN3OHJDLXpBRRAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CIHM0ogKEICAgMCw8rC-zAE%7C%7C?hl=en) — “5★ This company is the best! Chris went above and beyond to schedule me during a busy season when I was having issues with excessive oil con…” - 113 written accounts from 2023 to 2026, 52 of them in the last six months, consistently describing fast callouts, clear explanations and bills matching the estimate _(confidence: high)_ - [Google](https://maps.google.com/?cid=5613233819847337354&g_mp=CiVnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLkdldFBsYWNlEAIYBCAA) — “Google: 5★ from 121 ratings” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT25OelZFWTJjMFZHV0dONFdUSnhXa3hMVm1OYU1sRRAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOnNzVEY2c0VGWGN4WTJxWkxLVmNaMlE%7C%7C?hl=en) — “5★ I’ve used so many different HVAC companies and finally found one I can stick with. Every time I have booked, they arrive when they said, …” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pKaWVXaGFYM1l0TFY5aGNpMTZZV1ZJZUdsd0xVRRAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOjJieWhaX3YtLV9hci16YWVIeGlwLUE%7C%7C?hl=en) — “5★ I had an excellent experience with Fong & Sullivan. They responded to my call very quickly and were able to diagnose the leak in my LG mi…” - Specializes in HVAC / Heating & Cooling _(confidence: high)_ - [Official Website](https://fongsullivanhvac.com) — “A residential HVAC contractor based in North Attleborough, MA offering heating, cooling, heat pump, ductless mini-split, water heater and du…” - [Better Business Bureau](https://www.bbb.org/us/ma/plainville/profile/heating-and-air-conditioning/fong-sullivan-heating-cooling-llc-0021-567429) — “Services offered (Better Business Bureau): Heating and Air Conditioning, Air Conditioning Contractors, Heating Contractors, Furnace Repair, …” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pKaWVXaGFYM1l0TFY5aGNpMTZZV1ZJZUdsd0xVRRAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOjJieWhaX3YtLV9hci16YWVIeGlwLUE%7C%7C?hl=en) — “5★ I had an excellent experience with Fong & Sullivan. They responded to my call very quickly and were able to diagnose the leak in my LG mi…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT21WbWFHRjZaMGxTUlVGT05VMXRkMVJZV1V4YU5IYxAB!2m1!1s0x0:0x4de6366b4135a58a!3m1!1s2@1:CAIQACodChtycF9oOmVmaGF6Z0lSRUFONU1td1RYWUxaNHc%7C%7C?hl=en) — “5★ I recently had a ductless mini-split heat pump system installed by Fong & Sullivan Heating & Cooling LLC, and I couldn't be happier with …” ## License Status: **active** (#920-SM-B, hvac) — verified against the official MA state registry on 2026-08-09, never self-reported. Re-check at the official registry: https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page ## Sources - [Official Website](https://fongsullivanhvac.com): Self-reported profile and service details - [Better Business Bureau](https://www.bbb.org/us/ma/plainville/profile/heating-and-air-conditioning/fong-sullivan-heating-cooling-llc-0021-567429): Listed on this source - [Google Reviews](https://www.google.com/maps/search/?api=1&query=Fong%20and%20Sullivan%20Heating%20%26%20Cooling&query_place_id=ChIJ1RtBM0163UIRiqU1QWs25k0): Listed on this source - [Google](https://www.google.com/maps/search/?api=1&query=Fong%20and%20Sullivan%20Heating%20%26%20Cooling&query_place_id=ChIJ1RtBM0163UIRiqU1QWs25k0): 5.0★ from 121 ratings - [Yelp](https://www.yelp.com/biz/fong-and-sullivan-heating-and-cooling-plainville): Listed on this source ## Recent reviews - **5/5 · Google Reviews · Ron O'Neil · 2026-08-08**: Best service in 42 years at my home. - **5/5 · Google Reviews · Keith G · 2026-07-30**: I’ve used so many different HVAC companies and finally found one I can stick with. Every time I have booked, they arrive when they said, are thorough, give us available options and guidance, and the final tally has always been reasonable. Can’t say enough good things about them. - **5/5 · Google Reviews · Keith Getchell · 2026-07-30**: I’ve used so many different HVAC companies over 15 years and finally found one I will stick with. Every time I have booked, they arrive when they said they would, give us available options and guidance, and the final tally has always been reasonable. Can’t say enough good things about them, but tho… - **5/5 · Google Reviews · David Wang · 2026-07-24**: Justin (and Matthew?) did a fantastic job tuning up our AC system. Polite and very professional. Thank you very much. - **5/5 · Google Reviews · Adam · 2026-07-18**: Service, pricing and delivery was great. Will be using as our hvac company going forward. - **5/5 · Google Reviews · Stephen Leonard · 2026-07-16**: The team at Fong & Sullivan was simply amazing. They were responsive, attentive to every detail, took the time to answer every question we had…and their quality of work was second to none. They walked through all options, including demonstrating the proper size equipment that was most energy effici… - **5/5 · Google Reviews · Celina Vital · 2026-07-15**: Our unit started acting up and the turn around for someone to come and take a look was awesome. Justin was great and very informative. I will definitely be using them for this upcoming repair. - **5/5 · Google Reviews · Adam Roy · 2026-07-15**: I had an excellent experience with Fong & Sullivan. They responded to my call very quickly and were able to diagnose the leak in my LG mini-split within about 20 minutes. They repaired the leak, recharged the refrigerant, and had everything completed in about an hour. The technician was professiona… - **5/5 · Google Reviews · Matthew Fallon · 2026-07-13**: Suffered a failure of my Mitsubishi mini split system over the holiday. F/S came out as soon as they were able. The technicians Justin and Matt were very thorough, knowledgeable and accommodating of my many questions and concerns. I appreciate the quality service and will continue to use Fong and S… - **5/5 · Google Reviews · Sam D · 2026-07-10**: Absolutely the best service and very knowledgeable people super friendly, very clean totally professional, Completely satisfied, they deserve 10 stars not five I highly Recommend Justin and FONG&SULLIVAN --- Data freshness: last scanned 2026-08-09T18:23:02.486Z. Cite as: Fong and Sullivan Heating & Cooling — Tavlee (https://tavlee.com/contractor/fong-and-sullivan-heating-and-cooling-plainville) Source: https://tavlee.com/contractor/fong-and-sullivan-heating-and-cooling-plainville ## Sitemap [Full site index](https://tavlee.com/sitemap.md)