Grant UK vs Octopus Energy
Octopus Energy
Average Price
£13,500
Grant UK
£12,500
Octopus Energy
COP Rating
4.2
Grant UK
4.1
Octopus Energy
Warranty
8.0 years
Grant UK
10.0 years
Octopus Energy
Customer Rating
4.3/5
Grant UK
4.6/5
Octopus Energy
Grant UK vs Octopus Energy: Heat Pump Comparison
When comparing Grant UK and Octopus Energy heat pumps, key performance differences become apparent. Grant UK, established in 1978, offers heat pump systems with an average COP of 4.2 and SCOP of 4.5 at an average price of £13,500. Meanwhile, Octopus Energy heat pumps average a COP of 4.1 and SCOP of 4.3 at £12,500.
Grant UK heat pumps come with an average warranty of 8.0 years, compared to Octopus Energy's 10.0 years. Customer satisfaction ratings show Octopus Energy ahead at 4.6/5, while reliability scores give Octopus Energy a slight edge.
Both manufacturers offer smart control compatibility and produce heat pumps suitable for different property types. Both are based in United Kingdom.
Detailed Comparison
Who Should Choose Grant UK
- Those prioritizing highest energy efficiency and lower running costs
- Tech-savvy homeowners wanting smart home integration and remote control
- Those who prefer to support UK-based manufacturing and local support
- Homeowners looking for efficient heating solutions
Who Should Choose Octopus Energy
- Those wanting longer warranty coverage and comprehensive protection
- Homeowners valuing proven customer satisfaction and excellent after-sales support
- Long-term property owners seeking maximum warranty protection
- Homeowners wanting access to a wide network of certified installers
- Those looking for a heat pump with strong long-term performance
Popular Heat Pump Models
Grant UK Popular Models
| Model | Type | COP | Price |
|---|---|---|---|
| Aerona 3 6kW | Air Source | 4.0 | £6,200 |
| Aerona 3 10kW | Air Source | 3.8 | £7,400 |
| Aerona GSI 8kW | Ground Source | 4.9 | £11,800 |
Octopus Energy Popular Models
| Model | Type | COP | Price |
|---|---|---|---|
| Octopus Cosy 6 | Air Source | 4.2 | £2,500 |
| Octopus Cosy 8 | Air Source | 4.1 | £3,000 |
| Octopus Cosy 12 | Air Source | 3.9 | £3,500 |
Certified Installers
Grant UK Installers
Grant UK Installer Network
Approved Installer
Octopus Energy Installers
Octopus Energy Install Team
In-house
Performance & Running Costs
A higher COP (Coefficient of Performance) means more efficient heating and lower running costs. Based on average UK electricity prices for heat pumps:
Grant UK
Average COP Rating
4.2
Average SCOP Rating
4.5
Estimated Annual Running Cost
£425
Based on typical UK home heating needs
Annual Savings vs. Gas Boiler
£775
Octopus Energy
Average COP Rating
4.1
Average SCOP Rating
4.3
Estimated Annual Running Cost
£443
Based on typical UK home heating needs
Annual Savings vs. Gas Boiler
£757
Customer Reviews & Testimonials
Grant UK Owner Reviews
"Grant UK heat pumps have been excellent. Installed 18 months ago and running costs are much lower than our old gas boiler. Very quiet operation and the smart controls work perfectly."
Sarah M. - Aerona 3 6kW Owner
"Great performance even in cold weather. Installation team was professional and the ongoing support has been responsive when needed. Would recommend to others."
David K. - Aerona 3 10kW Owner
Octopus Energy Owner Reviews
"Octopus Energy heat pumps have been excellent. Installed 18 months ago and running costs are much lower than our old gas boiler. Very quiet operation and the smart controls work perfectly."
Sarah M. - Octopus Cosy 6 Owner
"Great performance even in cold weather. Installation team was professional and the ongoing support has been responsive when needed. Would recommend to others."
David K. - Octopus Cosy 8 Owner
Frequently Asked Questions
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