How hot water demand is assessed for a new system

Hot water demand assessment — the facts that change the job

• Likely simultaneous use of bathrooms matters more than the raw bathroom count
• Household size and typical daily routines factor into the assessment
• Incoming mains flow and pressure are measured, not assumed
• High-demand fixtures like power showers affect the sizing conversation
• The assessment decides between combi and stored hot water approaches

What we check first with hot water demand assessment

The assessment considers the number of bathrooms and their likely simultaneous use, household size and typical routines, incoming mains flow and pressure, and whether high-demand fixtures like power showers or baths are involved. This informs whether a combi boiler's instantaneous output will comfortably meet demand or whether a stored hot water system is the better fit.

Where we deal with this

• Easton (BA5) · 11 mi
• Baltonsborough (BA6) · 14 mi
• Tellisford (BA2) · 5 mi
• Whatley (BA11) · 8 mi

Questions we get asked

Is bathroom count the main factor in hot water sizing?

It's one factor, but simultaneous usage patterns and mains flow matter just as much for an accurate assessment.

Can this assessment change which boiler type is recommended?

Yes — demand assessment directly informs whether a combi or a stored hot water system suits the household better.