Water Heater Owner’s Toolkit

Fix the common faults yourself, keep it running for years, and know when a repair is money wasted.
- No-hot-water flowcharts, gas and electric
- Flush, anode, relief valve and descaling steps
- Repair-or-replace calculator (Excel)
See how it works
A two-minute walkthrough: what's in the download and the quickest way to use it. Buyers get the same video with their order.
Who it is for
- Your water heater is acting up and you want to know why before you call anyone
- You want to flush, test and maintain it yourself, safely
- A repair quote came in and you are not sure it is worth it
- You are choosing the next heater and want the size right
What's inside
- Know your water heaterp. 3
- Safety first: when to stop and callp. 4
- Maintenance calendarp. 5
- Flushing a tank heaterp. 6
- Testing the relief valve and checking the anodep. 7
- Descaling a tankless heater, heat-pump filterp. 8
- No hot water: electricp. 9
- No hot water: gas or propanep. 10
- Not enough, too hot, or swinging temperaturep. 11
- Noises, smells and coloured waterp. 12
- Finding a leakp. 13
- Repair or replace?p. 14
- Sizing the next heaterp. 15
- Maintenance log and service recordp. 16
- Quick referencep. 18
Look inside
Real pages from the guide. Tap a page to see it full size.
The Excel calculator
Type your own numbers in the orange cells and the answers work themselves out. It opens in Excel, Google Sheets and Apple Numbers.
How you get it
- Check out securely. Payment is handled by Lemon Squeezy, our reseller. Cards, PayPal and Apple Pay are accepted, and sales tax is worked out for you.
- Download straight away. The download button appears as soon as you pay, and the same link arrives by email with your receipt.
- Open and start. Watch the two-minute video, then start on page 3. Print only the pages you'll write on.
Refunds and help
30-day refund, no questions asked. If the guide isn't right for you, request a refund within 30 days of buying from your Lemon Squeezy order page (the "My Orders" link in your receipt email). Lemon Squeezy handles it and returns the money to the card or account you paid with.
Questions? Reply to your receipt email, or write to hello@heaterguides.com. A person answers.







