Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
Boilers.ca is a brand of ROMA Heating & Cooling · Licensed gas contractor LGA0202903
HTP · Series
The HTP Elite XL is the commercial condensing boiler in HTP's current space-heating navigation ('Commercial • Elite XL'): seven models from ELX-400FBN to ELX-2000FBN spanning 400,000 to 2,000,000 Btuh input, with a printed 97% thermal efficiency rating, a 4-pass heat exchanger and cascade support for up to eight boilers.
Series facts
The official page states 'The Thermal Efficiency rating for the Elite XL is 97% with Ultra Low NOx operation.' No per-model efficiency column is printed on the model table.
The Elite XL is documented on the official page as a 'powerful commercial boiler that is available in 7 sizes ranging from 400,000 Btuh to 2,000,000 Btuh'. Its printed model table lists the input class and the minimum/maximum Btu/hr for each model: ELX-400FBN (400 MBH; 39,900/399,000), ELX-500FBN (500; 50,000/500,000), ELX-650FBN (650; 65,000/650,000), ELX-800FBN (800; 80,000/800,000), ELX-1000FBN (1000; 100,000/1,000,000), ELX-1500FBN (1500; 150,000/1,500,000) and ELX-2000FBN (2000; 200,000/2,000,000). The page states the 4-pass heat exchanger 'allows for one of the smallest footprints of commercial boilers in the industry' and that the line cascades up to eight boilers.
As printed on the page, the Elite XL carries a 97% thermal efficiency rating with Ultra Low NOx operation, modulates to match system demand, includes an outdoor sensor for outdoor reset, and is backed by a 10 year limited warranty with no registration required. The LP-691 submittal and LP-690 specification add the fuel split — 400-1000 models operate on natural or LP gas while the 1500-2000 models are natural gas only — and HTP's documents page posts the I&O manual (lp-666), submittal (lp-691 Rev. 03.26.25) and specification (lp-690) as live documents.
The page also carries a live safety notice for the ELX 2000: 'HTP Quality Control has found in certain cases of ELX-2000 installations the burner can prematurely fail causing unsafe and potentially dangerous operation of the product. ALL ELX-2000 burners with the identified serial numbers are REQUIRED to be replaced as soon as possible.' Owners of an ELX-2000 should use the page's serial-number check. No official statement of Canadian sales was found on htproducts.com, so canadianStatus is 'unknown'; commercial gas work belongs with a licensed contractor against lp-666.
Highlights
The official page states the Elite XL 'is backed by a 10 year limited warranty - no registration is required.'
Models
One canonical page per model with input, output and efficiency kept separate.
The HTP Elite XL ELX-400FBN is the 399 MBH class model of HTP's current commercial condensing line: 39.9 to 399 MBH input, 387 MBH heating capacity, a 316L stainless steel water-tube heat exchanger and up to 10:1 modulation in a 538 lb floor-standing cabinet.
The HTP Elite XL ELX-500FBN is the 500 MBH class model of HTP's current commercial condensing line: 50 to 500 MBH input, 485 MBH heating capacity, a 316L stainless steel water-tube heat exchanger and up to 10:1 modulation in a 545 lb floor-standing cabinet.
The HTP Elite XL ELX-650FBN is the 650 MBH class model of HTP's current commercial condensing line: 65 to 650 MBH input, 630 MBH heating capacity, a 316L stainless steel water-tube heat exchanger and up to 10:1 modulation in a 680 lb floor-standing cabinet.
The HTP Elite XL ELX-800FBN is the 800 MBH class model of HTP's current commercial condensing line: 80 to 800 MBH input, 776 MBH heating capacity, a 316L stainless steel water-tube heat exchanger and up to 10:1 modulation in a 700 lb floor-standing cabinet.
The HTP Elite XL ELX-1000FBN is the 1000 MBH class model of HTP's current commercial condensing line: 100 to 1,000 MBH input, 970 MBH heating capacity, a 316L stainless steel water-tube heat exchanger and up to 10:1 modulation in a 745 lb floor-standing cabinet.
The HTP Elite XL ELX-1500FBN is the 1500 MBH class model of HTP's current commercial condensing line: 150 to 1,500 MBH input, 1455 MBH heating capacity, a 316L stainless steel water-tube heat exchanger and up to 10:1 modulation in a 1400 lb floor-standing cabinet.
The HTP Elite XL ELX-2000FBN is the 2000 MBH class model of HTP's current commercial condensing line: 200 to 2,000 MBH input, 1940 MBH heating capacity, a 316L stainless steel water-tube heat exchanger and up to 10:1 modulation in a 1750 lb floor-standing cabinet.
| Specification | HTP Elite XL ELX-400FBN | HTP Elite XL ELX-500FBN | HTP Elite XL ELX-650FBN | HTP Elite XL ELX-800FBN | HTP Elite XL ELX-1000FBN | HTP Elite XL ELX-1500FBN | HTP Elite XL ELX-2000FBN |
|---|---|---|---|---|---|---|---|
| Input rate, minimum | 39.9 MBH | 50 MBH | 65 MBH | 80 MBH | 100 MBH | 150 MBH | 200 MBH |
| Input rate, maximum | 399 MBH | 500 MBH | 650 MBH | 800 MBH | 1,000 MBH | 1,500 MBH | 2,000 MBH |
| output-max | — | — | — | — | — | — | — |
| afue | — | — | — | — | — | — | — |
| Turndown | Up to 10:1 | Up to 10:1 | Up to 10:1 | Up to 10:1 | Up to 10:1 | Up to 10:1 | Up to 10:1 |
| vent-max-3 | — | — | — | — | — | — | — |
| vent-max-2 | — | — | — | — | — | — | — |
| weight | — | — | — | — | — | — | — |
Read the full comparison: HTP Elite XL ELX-400FBN vs ELX-500FBN →
Read the full comparison: HTP Elite XL ELX-1000FBN vs ELX-1500FBN →
Read the full comparison: HTP Elite XL ELX-500FBN vs ELX-650FBN →
Read the full comparison: HTP Elite XL ELX-650FBN vs ELX-800FBN →
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 HTP boilers
Seven printed models: ELX-400FBN, ELX-500FBN, ELX-650FBN, ELX-800FBN, ELX-1000FBN, ELX-1500FBN and ELX-2000FBN, spanning 400,000 to 2,000,000 Btuh input.
The official page states a 97% thermal efficiency rating with Ultra Low NOx operation; the model table prints input ranges only, so Boilers.ca records the page's 97% figure and the per-model inputs.
Yes — the official page carries a burner improvement notice stating that all ELX-2000 burners with the identified serial numbers are required to be replaced as soon as possible, with a serial-number check tool on the page.
No official statement of Canadian sales or distribution was found on the official pages checked on September 9, 2026, so canadianStatus is recorded as 'unknown'. This hub documents the series for information and service planning.
Describe what the boiler is doing and get a straight answer about the next step.
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.