| Model | Type | Fuel | Efficiency |
|---|---|---|---|
|
|
|||
| Halstead 30/90Combi 30/90combi | Non-Condensing | Gas | 70.0% |
| Halstead 40h | Non-Condensing | Gas | 65.0% |
| Halstead 50h | Non-Condensing | Gas | 65.0% |
| Halstead Ace | Non-Condensing | Gas | 76.2% |
| Halstead Ace acl | Non-Condensing | Gas | 78.1% |
| Halstead Ace HE 24 | Condensing | Gas | 88.8% |
| Halstead Ace HE 30 | Condensing | Gas | 88.8% |
| Halstead Ace HE35 | Condensing | Gas | 89.3% |
| Halstead Ace High | Non-Condensing | Gas | 78.6% |
| Halstead Balmoral 45f | Non-Condensing | Gas | 72.0% |
| Halstead Balmoral 65f | Non-Condensing | Gas | 72.0% |
| Halstead Best 30 | Non-Condensing | Gas | 75.9% |
| Halstead Best 30 db | Non-Condensing | Gas | 78.1% |
| Halstead Best 40 | Non-Condensing | Gas | 75.6% |
| Halstead Best 40 db | Non-Condensing | Gas | 78.6% |
| Halstead Best 40 P | Non-Condensing | LPG | 80.4% |
| Halstead Best 50 | Non-Condensing | Gas | 76.4% |
| Halstead Best 50 db | Non-Condensing | Gas | 78.1% |
| Halstead Best 60 | Non-Condensing | Gas | 75.6% |
| Halstead Best 60 db | Non-Condensing | Gas | 79.2% |
| Halstead Best 60 P | Non-Condensing | LPG | 81.0% |
| Halstead Best 70 db | Non-Condensing | Gas | 78.5% |
| Halstead Best 80 | Non-Condensing | Gas | 76.2% |
| Halstead Blenheim 15/30 | Non-Condensing | Gas | 65.0% |
| Halstead Blenheim 30/40 | Non-Condensing | Gas | 65.0% |
| Halstead Blenheim 40 | Non-Condensing | Gas | 65.0% |
| Halstead Blenheim 40/50 | Non-Condensing | Gas | 65.0% |
| Halstead Blenheim 50 | Non-Condensing | Gas | 65.0% |
| Halstead Blenheim 50/60 | Non-Condensing | Gas | 65.0% |
| Halstead Blenheim 60/75 | Non-Condensing | Gas | 65.0% |
| Halstead Buckingham II BF100 | Non-Condensing | Gas | 65.0% |
| Halstead Buckingham II BF40 | Non-Condensing | Gas | 65.0% |
| Halstead Buckingham II BF50 | Non-Condensing | Gas | 65.0% |
| Halstead Buckingham II BF60 | Non-Condensing | Gas | 65.0% |
| Halstead Buckingham II BF70 | Non-Condensing | Gas | 65.0% |
| Halstead Buckingham II BF80 | Non-Condensing | Gas | 65.0% |
| Halstead Buckingham II CF100 | Non-Condensing | Gas | 65.0% |
| Halstead Buckingham II CF40 | Non-Condensing | Gas | 65.0% |
| Halstead Buckingham II CF50 | Non-Condensing | Gas | 65.0% |
| Halstead Buckingham II CF60 | Non-Condensing | Gas | 65.0% |
| Halstead Buckingham II CF70 | Non-Condensing | Gas | 65.0% |
| Halstead Buckingham II CF80 | Non-Condensing | Gas | 65.0% |
| Halstead Club HE 18 | Condensing | Gas | 88.9% |
| Halstead Eden cb | Condensing | Gas | 88.5% |
| Halstead Eden CBX 24 | Condensing | Gas | 89.4% |
| Halstead Eden CBX 32 | Condensing | Gas | 89.0% |
| Halstead Eden CBX 38 | Condensing | LPG | 89.6% |
| Halstead Eden sb | Condensing | Gas | 88.7% |
| Halstead Eden SBX 30 | Condensing | Gas | 89.5% |
| Halstead Eden vb | Condensing | Gas | 88.7% |
| Halstead Eden VBX 18 | Condensing | Gas | 89.5% |
| Halstead Eden VBX 30 | Condensing | Gas | 89.5% |
| Halstead Finest | Non-Condensing | Gas | 77.3% |
| Halstead Finest fpx | Non-Condensing | LPG | 81.1% |
| Halstead Finest fx | Non-Condensing | Gas | 79.3% |
| Halstead Finest Gold | Non-Condensing | Gas | 77.3% |
| Halstead Finest Gold fgx | Non-Condensing | Gas | 79.3% |
| Halstead Finest Platinum | Non-Condensing | Gas | 78.7% |
| Halstead Hero 30 | Non-Condensing | Gas | 79.2% |
| Halstead Hero 40 | Non-Condensing | Gas | 78.6% |
| Halstead Hero 50 | Non-Condensing | Gas | 78.5% |
| Halstead Hero 60 | Non-Condensing | Gas | 79.1% |
| Halstead Hero 75 | Non-Condensing | Gas | 78.4% |
| Halstead Hero 90 | Non-Condensing | Gas | 78.6% |
| Halstead iheat 20 | Condensing | Gas | 88.8% |
| Halstead Iheat 24c | Condensing | Gas | 86.0% |
| Halstead iheat 25c | Condensing | Gas | 88.8% |
| Halstead iheat 25s | Condensing | Gas | 88.8% |
| Halstead Iheat 29c | Condensing | Gas | 85.8% |
| Halstead iheat 30c | Condensing | Gas | 88.8% |
| Halstead iheat 35c | Condensing | Gas | 88.7% |
| Halstead Pulsejet 20 | Condensing | Gas | 88.7% |
| Halstead Pulsejet 32 | Condensing | Gas | 88.6% |
| Halstead Pulsejet 40 | Condensing | Gas | 88.6% |
| Halstead Quattro Quattro | Non-Condensing | Gas | 70.0% |
| Halstead Triocombi triocombi | Non-Condensing | Gas | 70.0% |
| Halstead Wickes 90 | Non-Condensing | Gas | 77.3% |
| Halstead Wickes Ace | Non-Condensing | Gas | 76.2% |
| Halstead Wickes Combi 102 | Non-Condensing | Gas | 78.6% |
| Halstead Wickes Combi 82 | Non-Condensing | Gas | 78.1% |
| Halstead Wickes Combi HE 24 | Condensing | Gas | 89.4% |
| Halstead Wickes LW 40 ci | Non-Condensing | Gas | 78.6% |
| Halstead Wickes LW 40Ci | Non-Condensing | Gas | 75.3% |
| Halstead Wickes LW 50 ci | Non-Condensing | Gas | 78.1% |
| Halstead Wickes LW 50Ci | Non-Condensing | Gas | 76.3% |
| Halstead Wickes LW 60 ci | Non-Condensing | Gas | 79.2% |
| Halstead Wickes LW 60Ci | Non-Condensing | Gas | 75.6% |
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