Professional boiler installation in Hampstead & NW3. Combi, system, regular boilers. Worcester Bosch, Vaillant, Ideal. Gas Safe. From £1,800 installed.
Boiler Installation Hampstead: New Boiler Replacement
A new boiler improves heating efficiency, reduces bills and provides reliable hot water. Our Gas Safe registered engineers install all major boiler brands across Hampstead and NW3, with 10-year warranties and expert service.
New Boiler Installation Costs
Combi Boiler Prices (Installed)
| Boiler Brand | Price Range | Warranty |
|--------------|-------------|----------|
| Ideal Logic+ 24kW | £1,800-£2,200 | 7 years |
| Worcester Bosch 25kW | £2,200-£2,800 | 10 years |
| Vaillant ecoTEC 25kW | £2,400-£3,000 | 10 years |
| Viessmann 200-W | £2,800-£3,500 | 10 years |
System Boiler Prices
- Ideal Vogue 18kW: £2,000-£2,600
- Worcester Bosch 30CDi: £2,500-£3,200
- Vaillant ecoTEC Plus: £2,700-£3,400
What's Included
- New boiler supply
- Full installation
- Magnetic filter
- System flush
- Wireless thermostat (basic)
- Building Control notification
- Gas Safe certification
- 1-year labor warranty
Types of Boilers
Combi Boilers
Best for: Flats, small-medium houses (1-3 bedrooms)
Advantages:
- Instant hot water
- No cylinder needed
- Space-saving
- Lower installation cost
- Efficient (90%+ A-rated)
Disadvantages:
- Limited hot water flow
- Can't run multiple taps simultaneously
- Poor with low mains pressure
Recommended sizes:
- 1-2 bed: 24-28kW
- 3 bed: 28-35kW
- 4+ bed: 35kW+
System Boilers
Best for: Larger homes (3-5+ bedrooms)
Advantages:
- Hot water cylinder storage
- Multiple taps simultaneously
- Works with solar thermal
- Better for larger families
Disadvantages:
- Needs cylinder space
- More expensive
- Hot water can run out
Recommended sizes:
- 3 bed: 18-24kW
- 4 bed: 24-30kW
- 5+ bed: 30-35kW
Regular (Heat Only) Boilers
Best for: Period properties, large homes
Advantages:
- Compatible with existing systems
- Works with gravity-fed systems
- Traditional reliability
Disadvantages:
- Needs cylinder and tank
- Takes most space
- Highest installation cost
Boiler Brands Compared
Worcester Bosch (Premium)
Best-selling brand in UK
- Reliability: Industry-leading
- Warranty: 10 years (with annual service)
- Efficiency: 94% A-rated
- Price: £2,200-£3,500 installed
- Parts: Readily available
Recommended models:
- Greenstar 8000: Premium range
- Greenstar 4000: Best value
- Greenstar 2000: Budget option
Vaillant (Premium)
German engineering excellence
- Quality: Exceptional build
- Warranty: 10 years
- Efficiency: 94% A-rated
- Price: £2,400-£3,400
- Quiet: Minimal noise
Recommended models:
- ecoTEC Plus: Top range
- ecoTEC Pro: Mid-range
Ideal (Mid-Range)
Budget-friendly reliability
- Value: Best price/performance
- Warranty: 7-10 years
- Efficiency: 93% A-rated
- Price: £1,800-£2,600
- Service: Good UK support
Recommended models:
- Vogue Max: Premium range
- Logic Max: Best seller
- Logic+: Budget option
Viessmann (Premium)
Luxury heating systems
- Build quality: Exceptional
- Warranty: 10 years
- Efficiency: 94% A-rated
- Price: £2,800-£3,800
- Features: Advanced controls
Installation Process
Day 1: Survey & Quote (1-2 Hours)
1. Assess current system
2. Calculate heat requirements
3. Recommend boiler size/type
4. Provide detailed quote
5. Book installation date
Installation Day (1-2 Days)
Day 1:
- Remove old boiler
- Install new boiler
- Connect pipework
- Fit flue
- Wire electrics
- Install magnetic filter
Day 2 (if needed):
- Commission boiler
- Balance radiators
- Demonstrate controls
- Issue certifications
- Register warranty
Timeframes
- Combi swap: 1 day
- Combi to system: 2 days
- New installation: 2-3 days
- Moved location: 2 days
Additional Components
Magnetic Filter
Essential protection
- Captures sludge and debris
- Protects new boiler
- Extends lifespan
- Cost: £120-£180 installed
- Highly recommended
Smart Thermostat
Upgrade for efficiency
- Hive Active Heating: +£180-£250
- Nest Learning: +£200-£280
- Tado: +£180-£250
- Save 20-30% on bills
Powerflush
If existing system dirty
- Remove sludge before new boiler
- Essential for warranty
- Prevents premature failure
- Cost: £395-£750
- Often required
Energy Efficiency & Savings
Old vs New Boiler Comparison
Old boiler (15+ years):
- 60-70% efficient
- £1,400+ annual gas bill (average)
- Frequent breakdowns
- No smart controls
New A-rated boiler:
- 90-94% efficient
- £900-£1,100 annual gas bill
- Reliable, under warranty
- Smart controls available
Annual Savings
- 3-bed house: £300-£500/year
- Payback period: 5-8 years
- Plus: Fewer repairs, better reliability
Building Regulations & Certification
Legal Requirements
- Building Control notification: We handle
- Gas Safe certification: Issued after install
- Benchmark logbook: Provided
- 10-year warranty: Must service annually
Certificates Provided
1. Gas Safe Installation Certificate
2. Building Control Compliance
3. Manufacturer Warranty Registration
4. Benchmark Commissioning Sheet
Hampstead-Specific Considerations
Period Properties
- System boilers often better
- May need cylinder replacement
- Chimney flue or external flue
- Conservation area considerations
Flats
- Combi boilers ideal
- Space-saving priority
- Shared flue systems possible
- Sound insulation important
Conservation Areas
- External flue positioning
- May need planning consent
- We advise on requirements
- Balanced flue options
Grants & Finance
Available Grants (2025)
- Boiler Upgrade Scheme: £5,000-£7,000 (heat pumps only)
- ECO4 Scheme: For low-income households
- Local authority: Check Camden Council
- We help with applications
Finance Options
- 0% finance: 12-24 months (selected boilers)
- Payment plans: Spread cost
- Monthly payments: From £75/month
- Subject to credit checks
Warranties & Service
Manufacturer Warranties
- Worcester Bosch: 10 years (with service)
- Vaillant: 10 years
- Ideal: 7-10 years
- Viessmann: 10 years
Annual Service Required
- Cost: £85-£120 per year
- Essential: Maintains warranty
- Benefits: Prevents 60% of breakdowns
- Book: On installation anniversary
Choosing the Right Boiler
Consider These Factors
1. Property size: Bigger = higher kW
2. Bedrooms/bathrooms: Multiple = system boiler
3. Water pressure: Low = system boiler better
4. Space: Limited = combi ideal
5. Budget: £1,800-£3,500 range
6. Usage: Large family = system boiler
Our Recommendations
- 1-2 bed flat: Ideal Logic+ 24kW combi
- 3-bed house: Worcester Bosch 28kW combi
- 4-bed house: Worcester 30kW system
- 5+ bed house: Vaillant 35kW system
Common Installation Upgrades
Moved Boiler Location
- Kitchen to utility room
- Garage installation
- Loft installation (combi only)
- Additional cost: £300-£800
New Pipework Required
- Copper pipe: £15-£25/meter
- Gas pipe upgrade: £200-£500
- New flue: £150-£300
Cylinder Replacement
- New unvented cylinder: £600-£1,200
- 150L-300L capacity
- 25-year warranty typical
Why Choose Hampstead Maintenance?
Our Service
✅ Gas Safe registered team
✅ 20+ years Hampstead experience
✅ All major brands: Worcester, Vaillant, Ideal
✅ Fixed pricing: No hidden fees
✅ Warranty management: We handle renewals
Customer Testimonials
*"Worcester Bosch combi fitted. Excellent installation, warm house, lower bills."* - Jennifer, Hampstead Village
*"Professional service from quote to completion. Highly recommend."* - Mark, Swiss Cottage
Frequently Asked Questions
Q: Which boiler brand is best?
A: Worcester Bosch for reliability, Vaillant for quality, Ideal for value. We recommend based on your needs.
Q: How long does installation take?
A: 1 day for simple combi swap, 2 days if converting systems or significant pipework.
Q: Do I need a powerflush?
A: Usually yes if your system is over 5 years old. Protects new boiler warranty.
Q: Can I move my boiler location?
A: Yes, we can relocate boilers. Additional cost depends on distance and pipework required.
Q: What size boiler do I need?
A: Depends on property size and hot water demand. We calculate this during survey.
Q: Are annual services really necessary?
A: Yes, required for warranty and prevents 60% of breakdowns.
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*Last updated: January 2025. Boiler installation prices include VAT, fitting, certification and 1-year labor warranty. Finance available. Free surveys and quotes.*