Detailed Comparison

Firebird Boilerhouse S 120-150 vs i 35

Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics

Efficiency 1

85.6%

Efficiency 2

88.9%

Type 1

Conventional

Type 2

Condensing

Firebird Boilerhouse S 120-150

Firebird

85.6%

Type:Conventional

Power:35.17 - 43.96

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Head to Head

🏆 WINNER

i 35

88.9%

Type:Condensing

Power:Unknown

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Efficiency & Performance

Efficiency Rating

Firebird

85.6%

BEST

88.9%

Power Output

Firebird

35.17 - 43.96

Unknown

Fuel Type

Firebird

Oil

Gas

Boiler Type

Firebird

Conventional

Condensing

Technical Specifications

Flue Type

Firebird

Room-Sealed

N/A

Method

Firebird

Non-Condensing

Condensing

Fan

Firebird

No Fan

N/A

Manufacture Period

Firebird

- 2013

N/A

Cost & Savings

Annual Savings

Firebird

£150-£300

BEST

£150-£300

Installation Cost

Firebird

Free (ECO4)

Comparison Summary

Efficiency Champion

i 35

i • 88.9%

Best Value

Both Boilers

Available FREE through ECO4 scheme

Our Recommendation

i 35 leads with 88.9% efficiency, providing better performance and energy savings.

FREE Installation Available

Ready to Get Your Free Boiler?

Both Firebird Boilerhouse S 120-150 and i 35 are available at no cost through the government ECO4 scheme. Take the next step today.

💰

£0 Installation Cost

Completely free through ECO4

⚡

High Efficiency

Save hundreds on heating bills

🏆

Quality Guaranteed

Professional installation included

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✓ Government Approved Scheme ✓ No Hidden Costs ✓ Professional Installation ✓ Energy Efficient

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