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GV90+ Gas Boiler

  • 91% AFUE efficient
  • Durable cast iron primary heat exchanger
  • Condensing stainless steel secondary heat exchanger
  • Unique 7 pass heat exchanger design maximizes heat transfer
  • Vents with PVC
  • Multiple ventilation options (direct vent, direct exhaust, concentric)
  • Easy conversion to propane (kit included)

Technical Data

Model AFUE (%) CSA Input (GPH) DOE Heating Cap. (MBH) Net AHRI (MBH) Vent Size (in.)
GV90+3 91.9 70 65 56 3
GV90+4 91.2 105 97 84 3
GV90+5 91.4 140 130 113 3
GV90+6 91 175 161 140 3

Product Video

Ratings & Reviews

Rated 4 out of 5 by from Great replacement boiler I install many types of boilers but these are great. They fit perfectly for homes with high temperature emitters and operate at their rated efficiency at those elevated temperatures. I have worked on the older GV going back to the early 90's models. The cast iron holds up. Add 91% efficiency with a simple component that has no moving parts is genius. I have installed three this winter and have a bid for three more in the works. I give it four stars for how it is shipped- I know its always been that way. But they can be up to 420 lbs. intimidating to tip down. Thats it. For those with circuit board issues, I suggest having a line voltage surge protector installed to the boiler power circuit.
Date published: 2017-05-03
Rated 1 out of 5 by from poor warrenty I had this unit installed 2yrs and 3 months ago and had theBoiler control board go bad. in December of 2016. It took 2 weeks before they got the part in so I had to use electric heaters to help heat the house. You would thin that since they only warrent part for 2 years that they would stock them and NOT make the customer wair 2 weeks. I guess the 2 weeks was to make up for the 2 months that unit was out of warrenty.
Date published: 2017-01-23
Rated 2 out of 5 by from Failed Control Module and Pressure Switch I've yet to make it through a heating season without an issue, boiler is 30 months old. The 120 volt section of the Control Module slowly decreased circulator drive until the boiler couldn't keep up and wouldn't heat above 150 degrees. The Pressure Switch failed the season prior. Had two Liberty Condensate Pumps replaced. Thank goodness for Climate Change since this boiler cannot run in a New England Winter.
Date published: 2017-03-06
Rated 2 out of 5 by from Third season, and trouble! We're into the third winter, and the unit doesn't work due to dry rot in some miniscule red and white sensor tubing...We had the boiler checked back in the summer, and there was no evidence of this! Does this only happen AFTER the warranty expires? I expected more of "The Cadillac of Boilers", as I certainly PAID enough for it!
Date published: 2017-02-02
Rated 5 out of 5 by from GV90+ awesome boiler! Really outstanding boiler! I think the cast iron-stainless design matches up best with existing high temperature baseboard jobs! Neat way to gain efficiency!!
Date published: 2017-02-01
Rated 5 out of 5 by from GV90+ Boiler Great boiler that we have been installing for years. It has made all of our customers very happy with its dependability and efficiency.
Date published: 2017-01-10
Rated 1 out of 5 by from poor control board We had this furnace installed March 20, 2014. It has only been used 2 winters and already we are told that it needs replaced.
Date published: 2016-12-21
Rated 5 out of 5 by from Great boiler. Workhorse Product is very dependable and can't wait to see what other similar products are in the pipeline
Date published: 2017-02-01
  • y_2017, m_5, d_22, h_23
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
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  • REVIEWS, PRODUCT
GV90+ Gas Boiler is rated 3.5 out of 5 by 10.
Rated 4 out of 5 by from Great replacement boiler I install many types of boilers but these are great. They fit perfectly for homes with high temperature emitters and operate at their rated efficiency at those elevated temperatures. I have worked on the older GV going back to the early 90's models. The cast iron holds up. Add 91% efficiency with a simple component that has no moving parts is genius. I have installed three this winter and have a bid for three more in the works. I give it four stars for how it is shipped- I know its always been that way. But they can be up to 420 lbs. intimidating to tip down. Thats it. For those with circuit board issues, I suggest having a line voltage surge protector installed to the boiler power circuit.
Date published: 2017-05-03
Rated 1 out of 5 by from poor warrenty I had this unit installed 2yrs and 3 months ago and had theBoiler control board go bad. in December of 2016. It took 2 weeks before they got the part in so I had to use electric heaters to help heat the house. You would thin that since they only warrent part for 2 years that they would stock them and NOT make the customer wair 2 weeks. I guess the 2 weeks was to make up for the 2 months that unit was out of warrenty.
Date published: 2017-01-23
Rated 2 out of 5 by from Failed Control Module and Pressure Switch I've yet to make it through a heating season without an issue, boiler is 30 months old. The 120 volt section of the Control Module slowly decreased circulator drive until the boiler couldn't keep up and wouldn't heat above 150 degrees. The Pressure Switch failed the season prior. Had two Liberty Condensate Pumps replaced. Thank goodness for Climate Change since this boiler cannot run in a New England Winter.
Date published: 2017-03-06
Rated 2 out of 5 by from Third season, and trouble! We're into the third winter, and the unit doesn't work due to dry rot in some miniscule red and white sensor tubing...We had the boiler checked back in the summer, and there was no evidence of this! Does this only happen AFTER the warranty expires? I expected more of "The Cadillac of Boilers", as I certainly PAID enough for it!
Date published: 2017-02-02
Rated 5 out of 5 by from GV90+ awesome boiler! Really outstanding boiler! I think the cast iron-stainless design matches up best with existing high temperature baseboard jobs! Neat way to gain efficiency!!
Date published: 2017-02-01
Rated 5 out of 5 by from GV90+ Boiler Great boiler that we have been installing for years. It has made all of our customers very happy with its dependability and efficiency.
Date published: 2017-01-10
Rated 1 out of 5 by from poor control board We had this furnace installed March 20, 2014. It has only been used 2 winters and already we are told that it needs replaced.
Date published: 2016-12-21
Rated 5 out of 5 by from Great boiler. Workhorse Product is very dependable and can't wait to see what other similar products are in the pipeline
Date published: 2017-02-01
  • y_2017, m_5, d_22, h_23
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_10
  • loc_en_US, sid_gv90-gas-boiler, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_weil-mclain
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getContent, 58.26ms
  • REVIEWS, PRODUCT