Is there a need for this niche?

I think the niche is real, but I don't think your customer is the average homeowner.

As a general contractor, we've had situations where a small plastic part, discontinued component, or control board held up an entire project because a replacement simply didn't exist. In those cases, the cost of the repair is almost secondary. What you're really selling is getting equipment or systems back online.

I'd lean heavily into contractors, manufacturers, maintenance departments, property managers, and industrial clients. Those customers understand what downtime costs, and they're much less likely to throw something away if a repair gets them running again.

One thing I'd also consider is finding a handful of discontinued products that have a surprisingly high search volume and building dedicated pages or videos around those specific repairs. If thousands of people are searching "replacement for XYZ control board" or "ABC plastic gear discontinued," and you're one of the few people offering a repair or remanufactured solution, you can become the obvious answer instead of hoping people discover your service.

I'd also emphasize real examples. Before-and-after photos, "saved a $12,000 machine with a $300 repair," or "recreated a discontinued part in 48 hours." People often don't know a service like yours exists until they see a problem you solved.

I don't think you're selling repairs. You're selling a solution when replacement isn't an option. That's a much stronger message.