When you are far away, a repair quote often arrives as a single page with one total and a short description. You are tempted to approve it so the problem can be solved from your phone. Before you do, read the rest of the paperwork, because the parts that cause surprises later are rarely on the first page.
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This guide uses a water heater as the example, since it is a common repair in an older house, but the same reading applies to a furnace, a sump pump or a roof section.
Read the scope line by line
The scope is the list of what the work includes. Check whether it covers removing and hauling away the old unit, the connections on both ends, any required inspection, and the final test of the new unit. Ask whether any permit is included and who pulls it. If the scope says only install new unit, ask what happens to the old one and whether the connections are rechecked.
Find the exclusions
Exclusions are the things the quote does not cover, and they are where the extra charges come from. Look for wording such as additional materials, unforeseen conditions, access issues or work that needs a second visit. Ask the company to name the most likely reasons a second charge would appear, and ask for those to be written into the quote as either included or priced in advance.
Compare the two warranties
A repair usually comes with two separate warranties. One is the manufacturer's warranty on the equipment itself. The other is the installer's warranty on their labor. Ask for both in writing. Find out who has to register the equipment warranty, whether that is you, your parent or the installer, and whether a missed registration can void it. Ask how long the labor warranty runs and whether it transfers if the house is sold.
Check the terms that are easy to skip
Look for the deposit amount and the payment schedule, the cancellation rule, the start date, and who to call if the work is not finished when promised. Confirm that the company carries liability insurance and that the people who will do the work are licensed where your local rules require it. You can check licensing with the local licensing board rather than relying on the company's word alone.
Ask for the same scope from at least two firms so you can see the differences. Compare what is included, not only the total. This is a comparison of terms, and it does not need to name any brand.
What to do tonight
Ask the company to send the full quote in writing, with the scope and exclusions listed separately. Ask for the equipment warranty and the labor warranty as separate documents. Do not approve the work until you have both and can read them without help. If you want to understand the general rules for repair paperwork, the Sources page on this site lists where we start.
What to take to the doctor
There is nothing about the heater itself to bring to the doctor. If the repair leaves her without hot water or heat for a stretch, especially in cold weather, write down when it happened and for how long, and mention it at her next visit, since a long period without heat or hot water can matter for some people's health. The doctor decides whether it matters for her.