Extremely happy with the services provided by James. He installed a 6 unit/2 compressor heat pump system in our 150+ year old house in about two days, demonstrating superior knowledge of the system and suggesting actually aesthetically pleasing choices for ducting etc. that many other contractors ignored. Price was reasonable for the scope and system specs, and James was extremely responsive and patient throughout the whole process. We also really appreciate James's help coordinating with MassSave (including some truly terrible inspections), ultimately enabling us to claim our full rebate. I'd highly recommend working with James, and we will continue to reach out to him for all our HVAC needs! read more

After a 3-yr search and MANY bids for a new HVAC, we settled on James Wu, who installed our system last month and proved the research paid off. Below are things I wanted to know before choosing a contractor; maybe it will be helpful for you. Our situation: 100+ yr old home with current boiler in basement. We recently insulated our walk-up attic - that would both freeze and melt items stored there - with closed-cell spray foam (more research there), added drywall and will use it for storage. This is where the air handler and ERV (for ventilation) went. Our upstairs is now ducted, with one vent running through a closet on the 2nd floor to 1st floor. We also added a Mitsibishi floor mount unit and a ceiling cassette on 1st floor. So, we had a VARIETY of equipment installed, requiring a contractor experienced in not only ducting, but mini-split installs with both a ceiling cassette and floor mount unit. We did not want the large wall mount mini split units. Our walls/ceilings are PLASTER, (metal wire mesh and cement-based): cutting them is a JOB. And, we wanted the floor mount unit RECESSED. COST - James was in-line with our other bids, which came in between 27k and 39k, largely depending on equipment recommended, with ceiling cassettes costing more. Many contractors simply would not install them, and wanted to run ducts in the corners of all upstairs rooms to first floor, which to us was a last resort. COMMUNICATION - James is very responsive to texts, emails, and even more importantly, he is a fantastic communicator. He is very calm, not pushy, explains things in an easy-to-understand way that clearly shows he knows his business. I actually told my husband after he left for the first time, "I think we may have found our guy" just based on his personality and knowledge. He's likeable, which isn't a requirement, but definitely helps. EXPERTISE - This is what truly sets James apart. Our needs were fairly complex, requiring interior ducting, 2 outside units with exterior line sets, and recessed ceiling units, but also RECESSING the inside floor unit into an interior wall. We've overseen several renovation projects recently and could tell these guys knew what they were doing. Also, they were perfectionists, and paid attention to details you don't often find with contractors. DEPENDABILITY - Not a single missed appt. Showed up on time with clear communication. The job took a week. He also helped with Masssave paperwork. They cleaned up after themselves each day, which we appreciated. KNOWLEDGE - Extremely versed in Mitsibishi equipment. He's a Diamond Contractor, which extends our warranty, but we'd have chosen him regardless. Every question I had about these units (cassette and floor unit operation, air handler, ERV, outdoor units, thermostats...) he knew the answer to. When I researched anything specific online, from multiple and trusted sources, I found the info he'd given me to be correct. I trust his knowledge and I don't automatically do that. One example: our ceiling cassette has an internal thermostat and it's off by several degrees regularly. I researched it and found we likely need an external thermostat separate from the unit to measure the room's temp. I texted James a photo showing the inaccurate reading and his immediate reply, "you need an external thermostat. I'll install one." That's what I'm talking about. INTEGRITY - Example: After the permit inspector left, James explained his philosophy on inspections. Each city apparently has different requirements. He learned several years ago how strict one particular city was, requiring a blower test to determine air tightness and the passing score was 4% or less. He got 4.1% and city wouldn't pass it. This required a lot more time/energy to go through everything and another test and more $$. So, now James says to his guys, "We install to the strictest inspection every time, regardless of the specific city's requirements, so we don't ever have to redo anything." In our case, the city didn't need a blower test but if they did, I feel confident we would have passed! I don't often take time to write reviews, esp this lengthly, but I felt it was warranted here. Finding an HVAC contractor is HARD; it's time-consuming and complicated. And a lot of money. Three years of research finally led us to James and now, looking back, it was worth the wait and headaches in research. I would highly recommend anyone in the market for a new HVAC, especially if it involves Mitsibishi and especially ESPECIALLY if it involves recessing any equipment like ceiling cassettes or wall units, to consider James Wu. He and his team are uniquely skilled in their work. read more

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Excellent work from James. He installed 2 AC units and had great advice on what system to install Much less cost than the bigger places where you only talk to a salesman. I could tell right away James was the right company. He put up with my many phone calls while I was trying to understand it all. I am really happy I could talk with the person actually doing the real work read more

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I could not be happier with hiring James and his team to replace our gas furnace and I look forward to having them install our heat pump soon. James is super helpful and knowledgeable when suggesting the best heating solutions for your house or condo based on your specific situation. We ended up with a much more efficient solution than what other contractors recommended. He was quick with estimate (which was very reasonable compare to other's) and came to install just couple of days later given that our furnace broke and we had no heat. The quality of the job was superb.  This team has your back in every way. I'm a handyman myself so I know when I come across a great contractor. read more

Highly recommended. I contact them with the request to change the water heater. They responded within 10 min and did Same day service. Very reliable business. read more

I am super happy I found and hired James Wu HVAC to do a deep cleaning of my 2 mini split units - and I can breathe now! They were incredibly dirty and James did a fantastic job leaving them like new. James is efficient, reliable, honest and an expert in his field, offering high quality work for a reasonable price. read more

I spoke with James about different options for heat for a rental property I own. He was extremely helpful in discussing my situation and giving me the pros and cons of each and his honest recommendations even if they were the less expensive options. read more

James Wu and his entire team were fantastic. So helpful and accommodating. And incredibly quick and reliable. I reached out over email for a quote for a heat pump / mini-split installation on Tuesday, June 17. He responded within an hour and had a rough quote by that evening. Followed up with an in person meeting on Wednesday to verify and cement the quote. His price and timeline was so reasonable that I agreed on the spot and I had a new mini-split system installed by that Saturday. That all occurred close to a month ago, and I am more in love with the system as this hot summer progresses. I am so glad I got the system and I am ever grateful for Jimmy and his team for making it so very easy. read more

James Wu did a fabulous job on a complicated furnace replacement. He put together a plan for the most efficient system for my home; his crew was professional, efficient, and knowledgeable; they were on time and cleaned up before they left. James spent the time to demonstrate and explain the furnace/AC/heat pump system and importantly he guarantees his work. He also included Federal and State tax credits and rebate information in calculating the final cost. His product choices were specific to my home and my needs, rather than installing a generic system. I was impressed by his thoughtful and careful work start to finish. I recommend him highly. read more

I've had James come to my house twice to repair or replace my water heater. He is professional and timely. Very reliable and his pricing is fair. I would 100% used his services again as well as recommend. read more

Jimmy promptly responded to all my questions and concerns. And he accomodated and remained flexible with my requests of working on specific dates and times. At the end, he explained about how the HVAC system works and the future maintenances in easy to understand terms. He was prodessional throughout the process and I am very happy with his work. read more

Although he had just worked long hours all the previous week, Mr. Wu came on a Saturday morning to check our heater and returned on Sunday to install a new furnace for us because he was fully booked for the next week. Talk about kindness and work ethic! Unlike the sales person Homeserve sent to give us a quote, James actually measured and figured out why our prior furnace lasted only 9 years due to incorrect sizing of the air ducts for the BTU. Our new 80 BTU system is so much more effective than the old 100 BTU furnace that we now keep our thermostat lower by several degrees. The Bosch furnace we bought was better quality than the American Standard suggested by Homeserve and his quote came in at a slightly lower price. I totally recommend James Wu! read more

James was referred to me by another service person for his quality of work and efficiency. And he didn't disappoint! He installed 7 mini-split units in my home and also walked me through the MassSave process. Because of him, I saved and will continue to save quite a bit of money. He's professional, trustworthy, and extremely knowledgeable. I would use him again, without question, and will refer him to other friends. read more

James is extremely knowledgeable on what he does. He is a hard working professional who came to our house very late in the evening and completed all the work till the late night. I would highly recommend James for any plumbing needs. Thank you James for a great job well done to install my hot water heater like a work of art! read more

We interviewed 3 companies to install 2 mini split units in our 1840 Westwood home. We were looking for a company that first and foremost listened to us and our needs. Next, they had to have a strong aesthetic sense as to what units would both look and work best in each location. Finally, we needed to be confident that they had the technical competence to install the units properly, with minimal pipes exposed. James Wu exceeded all of our expectations. He was extremely knowledgeable about the operation and limitation of these units, offered suggestions about the type and optimal placement, and paid meticulous attention to every aspect of the job. We could not be happier with the results of the installation and would recommend his company without reservation. read more

We had the great pleasure of working with James on our HVAC system. James designed a hybrid Heat Pump/Boiler system. We have an older house, and were concerned about the aesthetics. James listened and incorporated our concerns. He was prompt, respectful, and his work is of the highest quality. Not only was he responsive during the process, he has been responsive during after the work is done if there are questions or problems. We would recommend him to anyone for HVAC or Plumbing work! read more

I highly recommend James Wu HVAC. Mr. Wu and his team are exceptionally efficient and professional. They arrived at the site promptly and completed the project on schedule. Not only did they deliver high-quality work, but they also ensured the space was thoroughly cleaned afterward and took the time to explain to me how to operate the new system. Mr. Wu is trustworthy and transparent, he offered me with detailed explanations and addresses all my questions about the new heat pump system with patience and thoroughness. His bilingual abilities are an added asset--Mr. Wu is fluent in both English and Mandarin Chinese. I am extremely pleased and grateful for Mr. Wu and his team. Their work transformed what could have been a stressful installation into a worry-free experience to me . I strongly recommend James Wu HVAC for any heating or cooling needs. read more

James Wu installed my AC mini split system and delivered what he promised in a timely professional way. He stayed one day until 8 pm because the work was delayed by another contractor working in my neighbor's apartment- but he was determined to do the best job for me as he had promised. He gave me a very fair price and delivered a first class system which he stands behind. I trust him and recommend him without any hesitation. He's a really intelligent, straight forward hardworking professional who will figure out the best solution for your home and leave it looking great and feeling comfortable. read more

James is fabulous!!!!! He is knowledgeable, friendly, smart and a problem solver. And he answers his phone!! James has replaced my hot water heater and replaced some central ac parts. I highly recommend James and I won't use anyone else for HVAC and plumbing. read more