Crystal Windows vs Rehau
Crystal Windows
Average Price
£560
Crystal Windows
£590
Rehau
U-Value
1.3 W/m²K
Crystal Windows
1.1 W/m²K
Rehau
Warranty
10.0 years
Crystal Windows
10.0 years
Rehau
Customer Rating
4.1/5
Crystal Windows
4.6/5
Rehau
Crystal Windows vs Rehau: Summary
When comparing Crystal Windows and Rehau windows, several key differences emerge. Crystal Windows, established in 1992, offers windows with an average U-Value of 1.3 W/m²K at an average price of £560. Meanwhile, Rehau windows average 1.1 W/m²K U-Value at £590.
Crystal Windows windows come with an average warranty of 10.0 years, compared to Rehau's 10.0 years. Customer satisfaction ratings show Rehau ahead at 4.6/5, while reliability scores give Rehau a slight edge.
Both manufacturers offer smart glazing technology and produce windows suitable for different property types. Crystal Windows is based in United Kingdom, while Rehau originates from Germany.
Detailed Comparison
Who Should Choose Crystal Windows
- Budget-conscious homeowners looking for value windows
- Tech-savvy homeowners wanting smart glazing features
- Those who prefer to support UK manufacturing
- Homeowners looking for classic casement window designs
Who Should Choose Rehau
- Homeowners valuing customer satisfaction and after-sales support
- Homeowners wanting access to a wide network of approved installers
- Those looking for windows with exceptional reliability
Scenario Fit: Which Brand Fits Your Situation?
Best for budget-first upgrades
Crystal Windows is generally the lower upfront-cost option in this comparison.
- • Better for large multi-window projects with tighter budget caps
- • Useful when payback speed matters more than premium extras
- • Pair with installer quote comparisons to lock value
Best for long-term ownership
Crystal Windows currently leads on warranty depth in this matchup.
- • Better fit if you plan to stay in the home 10+ years
- • Prioritises lower maintenance surprises over time
- • Stronger risk control for exposed or high-traffic elevations
| Decision Lens | Likely Better Choice | Why |
|---|---|---|
| Upfront budget | Crystal Windows | Lower average price in this pair. |
| Energy performance | Rehau | Lower U-Value typically means stronger heat retention. |
| Maintenance risk framing | Crystal Windows | Longer average warranty can reduce long-tail ownership risk. |
| User-rated confidence | Rehau | Higher customer satisfaction score in current data. |
Popular Window Models
Crystal Windows Popular Models
| Model | Type | Material | Rating | U-Value | Price |
|---|---|---|---|---|---|
| RapidFit Elite | Casement | uPVC | A+ | 0.8 W/m²K | £550 |
| AcousticPro | Tilt & Turn | uPVC | A | 0.9 W/m²K | £750 |
Rehau Popular Models
| Model | Type | Material | Rating | U-Value | Price |
|---|---|---|---|---|---|
| Total70c | Casement | uPVC | A+ | 1.1 W/m²K | £520 |
| Rio Flush Fit | Flush Casement | uPVC | A | 1.2 W/m²K | £570 |
| Geneo | Tilt and Turn | uPVC | A+ | 1.0 W/m²K | £680 |
Approved Installers
Crystal Windows Installers
No installer data available
Rehau Installers
Rehau Authorised Partners
Authorised Partners
Energy Efficiency & Cost Savings
More energy-efficient windows can significantly reduce your heating bills. Based on average UK energy prices and a typical 3-bedroom house:
Crystal Windows
Average U-Value
1.3 W/m²K
Lower is better for heat retention
Energy Rating
A
Estimated Annual Energy Savings
£300
Compared to older single-glazed windows (typical U-Value 5.8)
Rehau
Average U-Value
1.1 W/m²K
Lower is better for heat retention
Energy Rating
A+
Estimated Annual Energy Savings
£338
Compared to older single-glazed windows (typical U-Value 5.8)
Frequently Asked Questions
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