Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
Triangle Tube Phase III SMART 20 and Triangle Tube Phase III SMART 30 are two tankless water heaters from the Triangle Tube Phase III (TR / SMART) line. Triangle Tube Phase III SMART 30 lists 15 lb more shipping weight than Triangle Tube Phase III SMART 20 (115 lb against 100 lb).
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Triangle Tube Phase III SMART 20 | Triangle Tube Phase III SMART 30 |
|---|---|---|
| Empty weight | 100 lb | 115 lb |
| Domestic water capacity | 22 gal | 28 gal |
| Boiler water volume | 5 gal | 5 gal |
| Heating surface | 11 sq ft | 13 sq ft |
| Head loss, boiler side | 3/4 ft | 3/4 ft |
| Domestic connection | 3/4" | 3/4" |
| Boiler connection | 1" | 1" |
| Drywell length | 25.5 in | 29.5 in |
| Boiler heating capacity | 70 MBH | 76 MBH |
| Peak flow | 35 gal/10 min | 40 gal/10 min |
| First hour flow | 110 gal/hr | 125 gal/hr |
| Continuous flow | 95 gal/hr | 100 gal/hr |
| Minimum circulator flow | 5 GPM | 5 GPM |
Triangle Tube Phase III SMART 30 lists 15 lb more shipping weight than Triangle Tube Phase III SMART 20 (115 lb against 100 lb). The domestic water capacity differs: the Triangle Tube Phase III SMART 20 lists 22 gal, while the Triangle Tube Phase III SMART 30 lists 28 gal. The heating surface differs: the Triangle Tube Phase III SMART 20 lists 11 sq ft, while the Triangle Tube Phase III SMART 30 lists 13 sq ft. The drywell length differs: the Triangle Tube Phase III SMART 20 lists 25.5 in, while the Triangle Tube Phase III SMART 30 lists 29.5 in.
Both records print the same boiler water volume (5 gal), head loss, boiler side (3/4 ft), domestic connection (3/4") and boiler connection (1"), per the cited sources.
Triangle Tube
The Triangle Tube Phase III SMART 20 is a discontinued 22-gallon indirect water heater with 5 gallons of boiler water, 11 sq ft of heating surface and a printed first-hour flow of 110 gallons at 50°F inlet / 140°F outlet / 200°F boiler supply.
Triangle Tube
The Triangle Tube Phase III SMART 30 is a discontinued 28-gallon indirect water heater with 5 gallons of boiler water, 13 sq ft of heating surface and a printed first-hour flow of 125 gallons at 50°F inlet / 140°F outlet / 200°F boiler supply.
It ships at 115 lb against 100 lb for the Triangle Tube Phase III SMART 20, per the cited sources.
Both list the same boiler water volume, head loss, boiler side, domestic connection and boiler connection, per the cited sources.
A consultation includes a heat-loss review so the size is right the first time.
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.