Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Laars Heating Systems · Series
The Mascot II is Laars' discontinued wall-mounted modulating line at a single 125 MBTU/h size: the LMH heating-only boiler and the LMC combination boiler and water heater, rated 95.0% AFUE with a 5:1 turndown and a 100 lb cabinet. Laars lists the Mascot II documents under Discontinued Documents.
Series facts
95.0% AFUE printed in the Mascot II brochure's specifications table.
The Mascot II covered both sides of the residential market in one 125 MBTU/h wall-hung platform: the LMH modulating boiler and the LMC combination boiler and water heater, each printed on the I&O manual's cover at 125 MBTU/h. The brochure's specification table rates the line at 95.0% AFUE with 125 MBH maximum input and 115 MBH maximum output, a 4.0 gpm domestic-water draw at a 60°F rise on the combi, a 30 psi pressure-relief setting, 1/2 in NPT gas and 3/4 in NPT supply and return connections, a stainless steel burner and heat exchanger, and a 100 lb weight.
Laars marketed the Mascot II on its condensing operation, a 20% to 100% modulating gas valve (5:1 turndown), 10 ppm NOx, Energy Star qualification, a built-in expansion tank sized for 26 gallons of system water, zero installation clearance and a sealed condensate trap that does not need priming at start-up. The brochure also lists the two venting arrangements — a 2 in two-pipe flue terminal or a 3/5 in concentric terminal — and the 2-year parts / 12-year heat exchanger warranty.
Laars no longer lists a current Mascot II product page in its category navigation, and the Document Library files the Mascot II I&O (Document 1230E), parts list and warranty under its Discontinued Documents category, with the discontinued-documents index listing the Mascot II install manual, users manual, start-up guide, literature and warranty. The live legacy page at /products/product/mascot-ii still hosts the 1230 manual and parts links.
Highlights
Models
One canonical page per model with input, output and efficiency kept separate.
Laars Heating Systems
The Laars Mascot II LMH is the discontinued heating-only version of the 125 MBTU/h Mascot II wall-mounted modulating boiler: 125 MBH input, 115 MBH output and 95.0% AFUE, with no domestic-water production built in.
Laars Heating Systems
The Laars Mascot II LMC is the discontinued combination version of the 125 MBTU/h Mascot II: 125 MBH input, 115 MBH output, 95.0% AFUE and domestic hot water through a stainless steel brazed-plate heat exchanger at up to 4.0 gpm.
| Specification | Laars Mascot II LMH | Laars Mascot II LMC |
|---|---|---|
| input-min | — | — |
| Input (as printed) | 125 MBH | 125 MBH |
| Output (as printed) | 115 MBH | 115 MBH |
| Efficiency (AFUE) | 95 % | 95 % |
| Turndown | 5:1 (20%–100% modulation) | 5:1 (20%–100% modulation) |
| vent-max-3 | — | — |
| vent-max-2 | — | — |
| Weight | 100 lb | 100 lb |
Error codes and alerts
No alerts documented for this series yet.
Manuals
Where ROMA provides on-site service
On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.
Services for Laars Heating Systems boilers
Laars files the Mascot II I&O (Document 1230E), parts list and warranty under its Discontinued Documents category and lists the manuals on the discontinued-documents index, so the line is discontinued; the legacy product page at /products/product/mascot-ii remains online for documentation.
The LMH is the wall-mounted modulating boiler at 125 MBTU/h and the LMC is the combination boiler and water heater at the same 125 MBTU/h input, adding domestic hot water through an integrated stainless steel brazed-plate heat exchanger.
The Mascot II brochure prints 95.0% AFUE with 125 MBH maximum input and 115 MBH maximum output, and a 4.0 gpm domestic draw at a 60°F rise on the combi.
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On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Sources and verification
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.