Information and disclaimer

How to use HomDera information

HomDera guides and calculators are intended for general information and preliminary planning. They can help you organise measurements, compare options and understand the assumptions behind an estimate.

The information should not be treated as a final specification, quotation, inspection report or approval for work at a particular property. Actual conditions, product instructions and local requirements take priority over a general online estimate.

Calculator results

Calculator outputs depend on the values, units and assumptions entered by the user. Incorrect measurements, incomplete appliance lists, unsuitable product coverage or unrealistic allowances will produce an unreliable result.

• Check measurements and selected units before relying on a result.
• Use product packaging or manufacturer documentation for coverage, capacity and operating limits.
• Allow for project-specific factors such as cuts, waste, surface condition, system losses and actual connected load.
• Confirm important technical or financial decisions with the relevant professional.

Safety and professional advice

A website cannot inspect the condition of a room, structure, electrical system, gas appliance or installed equipment. Advice that depends on those conditions requires an on-site assessment.

Take particular care with permanent electrical wiring, electrical panels or consumer units, gas appliances, load-bearing structures, demolition, work at height and high-capacity battery systems. HomDera can help you prepare for a professional consultation, but it should not be treated as the sole instruction for work that could endanger people, property or equipment.

How we handle updates and corrections

Confirmed errors in formulas, units, examples, labels or calculator logic are corrected on the affected page. We may also update content when product information, linked tools or safety guidance changes.

A useful error report includes the page URL, entered values and units, the result received and the result expected.

Advertising and editorial independence

HomDera displays advertising to support hosting, maintenance and continued development of the website.

Advertising does not determine calculator formulas, safety warnings or editorial conclusions. Any sponsored or affiliate relationship is identified where disclosure is required.