A stair lift is a fixed piece of equipment bolted to the staircase, so the install process decides whether it works, whether it is safe to use, and whether the warranty will hold. The sale is the easy part. Use the steps below in order and do not let the installer skip ahead to the drill.

Local option: New Plan Care gives families in the St. Louis area in-home help so a parent can stay home: companionship, help with bathing and dressing, meals, and overnight care. Call (314) 405-0887.

Step 1: The survey comes before the quote is final

Ask for an on-site survey before anyone commits to a model. The surveyor should measure the full run of the stairs from the bottom tread to the top, count the steps, and record any landing, bend, or curve. A straight staircase and a staircase with a landing or turn are different jobs, and a quote that does not say which one it is pricing has not finished the measuring.

Check the clearances the survey must record. Note the width of the stairs, the space the seat needs to fold, and the swing of any door at the top and the bottom. Ask where the outlet is and whether the installer expects to run a new circuit. Write the measurements on the quote itself. If the number on the paper does not match the measurement in the house, stop there.

Step 2: Confirm how the track is fastened

Ask the installer exactly where each bracket goes and what it is fastened into. The track is only as firm as its anchor points, so ask whether the brackets go into the treads, the stringer, or the wall, and whether the installer will check the structure before drilling. If the stairs look weak, soft, or damaged, that is a question for the installer and the building owner before the job starts, not a problem to solve on the day.

Step 3: Settle the permit and the electrical work before the install date

Ask who pulls the permit and who signs for the electrical. Some jurisdictions require a permit for work that involves wiring or structural fastening, and some do not. Check with the building office for the city or county where the house sits, because the answer changes from one jurisdiction to the next. Ask the installer to put the permit, any inspection, and any electrical line on the written quote, so the total you compare is the out-the-door total and not just the lift.

Step 4: Watch the install and ask for each control to be named

On install day, ask the installer to point to each part as it goes in: the rail sections, the joints between them, the charging point, the battery, the swivel seat, the footrest, the arm controls, and the emergency stop. Ask where the battery sits and how to charge it. Ask what the seat does when it is folded, and whether it locks in that position. A stair lift that is installed but not explained is a stair lift the family will have to figure out later.

Step 5: Run the acceptance test with the person who will use it

Before the installer leaves, run a full trip up and down with the person who will use the lift, not only with the installer. Check that the seat stops at both ends without a jolt, that the stop works when the path is blocked, that the emergency stop cuts power, that the seat belt latches, and that the lift reports a low battery. Check the rail for any gap or loose joint and look at the bolts. Ask what happens during a power outage and whether the lift can be moved by hand.

Whether the person is physically able to sit down, stand up, and buckle safely is a question for the doctor or therapist, not for the installer. Ask the doctor or therapist before the first ride, and ask the installer to sign off that the test was done.

Step 6: Read the warranty and the service terms before you sign the completion form

The warranty is a contract. Read what it covers, how long each part is covered, who does the labor, and who to call. Check the response time for a service call, what voids the warranty, and whether the installer or the manufacturer holds the paper. Ask for the owner's manual and the name of the service contact in writing. Ask whether an annual service visit is offered and what it costs, and get that line on paper too.

Do not sign the completion form until the acceptance test is done and the warranty terms are in your hand.

Who pays for the parts you did not ask about

Medicare generally does not pay for home modifications, and stair lifts are usually treated as a home modification rather than as covered medical equipment. Check your own plan with the plan itself and check Medicare.gov for the current rule. A Missouri Medicaid waiver may cover some home modifications for eligible people, so ask the Missouri Department of Social Services whether a waiver applies. If the person is a veteran, ask the VA whether any home improvement benefit applies to their situation. Get each answer in writing before you schedule the install, because a payer that says no after the lift is in place leaves the family with the whole bill.

Free help with the install questions

The Local Help With Paying for Care page lists the free counseling options in the St. Louis area. Missouri SHIP can explain the Medicare side at no cost, and Aging Ahead can point to in-home and home modification services. Use the counselor to check the payer answers and use the installer to check the install. Do not let one stand in for the other.

Where this stops

If the stairs or the house are owned by someone other than the person who needs the lift, or if a contract dispute, a lien, or a claim against the house comes up, stop and talk to a lawyer before you pay. If the question is whether the person can safely use the lift at all, the doctor or therapist decides that, not the installer or the salesperson.

The Stair Lift Is Measured Before It Is Bought: Survey, Permit, Install, and Acceptance Test in Order