| Brand name, Model name, Model qualifier | Type | Fuel | |
|---|---|---|---|
| Grant, Vortex , 15 | Regular | heating oil | Details |
| Grant, Vortex , 20 | Regular | heating oil | Details |
| Grant, Vortex , 26 | Regular | heating oil | Details |
| Grant, Vortex , 15 S | Regular | heating oil | Details |
| Grant, Vortex , 20 S | Regular | heating oil | Details |
| Grant, Vortex , 26 S | Regular | heating oil | Details |
| Grant, Vortex , Utility 15-26 | Regular | heating oil | Details |
| Grant, Vortex , Utility System 15-26S | Regular | heating oil | Details |
| Grant, Vortex , 36 | Regular | heating oil | Details |
| Grant, Vortex , 36S | Regular | heating oil | Details |
| Grant, Vortex , Outdoor Module 36-46 | Regular | heating oil | Details |
| Grant, Vortex , Outdoor Module 26-36 | Regular | heating oil | Details |
| Grant, Vortex , Outdoor Module 15-26 | Regular | heating oil | Details |
| Grant, Vortex , Utility 36-46 | Regular | heating oil | Details |
| Grant, Vortex , Utility System 36-46S | Regular | heating oil | Details |
| Grant, Vortex , Outdoor Condensing Combi 36 | Combi | heating oil | Details |
| Grant, Vortex , Outdoor Condensing Combi 26 | Combi | heating oil | Details |
| Grant, Vortex , Utility 46-58 | Regular | heating oil | Details |
| Grant, Vortex , Utility 58-70 | Regular | heating oil | Details |
| Grant, Vortex , 15-26S Kitchen Boiler | Regular | heating oil | Details |
| Grant, Vortex , 26-36 Utility Boiler | Regular | heating oil | Details |
| Grant, Vortex , 26-36-S Utility System Boiler | Regular | heating oil | Details |
| Grant, Vortex , 15-26 Kitchen Boiler | Regular | heating oil | Details |
| Grant, VORTEX , BOILERHOUSE 15-21 | Regular | heating oil | Details |
| Grant, VORTEX , BOILERHOUSE 21-26 | Regular | heating oil | Details |
| Grant, VORTEX , BOILERHOUSE 26-35 | Regular | heating oil | Details |
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