Lochinvar · Squire Indirect Tank (SIT/SDT/SET)
Lochinvar Squire SDT119
The Lochinvar Squire SDT119 is a 110-gallon solar indirect water heater with a 316L stainless steel tank and coil, 0.4°F/hr standby loss and a 224 lb shipping weight.
Key figures
- Max input
- —
- Max CSA output
- —
- AFUE
- —
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Lochinvar Squire SDT119 in practice
The Squire SDT119 is a 110-gallon indirect water heater in the SDT family of Lochinvar's Squire line. The printed submittal table lists 0.4°F/hr standby loss, 301 gallons of first-hour delivery, 251 gph continuous delivery, a minimum coil load of 181,000 BTU/hr and a 224 lb shipping weight.
The Squire stores domestic hot water and reheats it from the heating boiler through its stainless steel coil; the tank and coil are 316L passivated stainless steel in fully welded construction, with 1-1/2" domestic connections and 1" boiler supply/return connections. The submittal includes a tank sensor for use with KNIGHT heating boilers, and the warranty is limited lifetime with 5-year parts (10-year tank and 1-year parts in commercial applications).
Best suited to
- Households pairing a 110-gallon tank with a heating boiler
- Homes that want domestic hot water stored in stainless steel rather than a combi
- Solar hot water systems that need a solar-indirect tank
Applicability and support
- Model number
- SDT119
- Canadian availability
- available
- Production status
- current
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Series terms
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.
Specifications
Published specifications
Values as published by Lochinvar. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Domestic hot water | ||
| Domestic water capacity | 110 gal | Per the printed submittal table. |
| Continuous delivery | 251 GPH | Per the printed submittal table. |
| First hour delivery | 301 gal | Per the printed submittal table. |
| Physical and connections | ||
| Heat source water volume | 3.2 gal | Per the printed submittal table. |
| Standby loss | 0.4 °F/hr | Per the printed submittal table. |
| Domestic water connections | 1-1/2" | Per the printed submittal table; boiler supply and return connections are 1" on every model. |
| Shipping weight | 224 lb | Per the printed submittal table. |
| Operating limits and other | ||
| Minimum coil load | 181,000 BTU/hr | Per the printed submittal table. |
| Flow rate | 14 GPM | With 4.9 ft of friction loss per the printed submittal table. |
| Tank and coil | 316L passivated stainless steel | Printed in the submittal standard features for all Squire families. |
Manuals
Alerts documented for this model
None documented yet.
Frequently asked questions
What is the Squire SDT119's capacity?
The printed submittal lists 110 gallons of domestic water capacity with 0.4°F/hr standby loss and 301 gallons of first-hour delivery.
Can the Squire be used with a Knight boiler?
Yes. The submittal includes a tank sensor for use with KNIGHT heating boilers; other boilers can use the optional thermostat. Domestic water is heated through the tank's stainless steel coil.
What is the warranty on a Squire?
The submittal prints a limited lifetime warranty with a 5-year parts warranty, and 10-year tank with 1-year parts coverage when used in a commercial application.
Questions about the Lochinvar Squire SDT119?
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.
Compare and explore
- Lochinvar Squire SDT080 vs SDT119Comparison
- Lochinvar Squire SIT030Same series
- Lochinvar Squire SIT040Same series
- Lochinvar Squire SIT050Same series
- Lochinvar Squire SIT065Same series
- Lochinvar Squire SIT080Same series
- Lochinvar Squire SIT119Same series
- Lochinvar Squire SIT040DWSame series
- Lochinvar Squire SIT050DWSame series
- Lochinvar Squire SIT065DWSame series
- Lochinvar Squire SIT080DWSame series
- Lochinvar Squire SIT119DWSame series
- Lochinvar Squire SDT065Same series
- Lochinvar Squire SDT080Same series
- Lochinvar Squire SET065Same series
- Lochinvar Squire SET080Same series
- Lochinvar Squire SET119Same series
- Squire Indirect Tank (SIT/SDT/SET) series hub
- Buying guide
Sources and verification
- Lochinvar — Squire Indirect Tank (SDT080) model page · accessed September 9, 2026
- Squire Stainless Steel Solar Indirect Water Heaters (SDT) Submittal Sheet, SDT-Sub-05 · accessed September 9, 2026
- Squire Indirect Water Heater Installation & Operation Manual, Rev X · Rev X · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.