Bradford White Water Heater (50 gal) not working - might be blower?

10+ yr old Bradford White water heater stopped working. 1 plumber said the blower/motor is broken. Current blower motor is Jackel #117524-00 and 1150519-00. Getting all sorts of advice as I assess who should fix this - does it require an HVAC specialist? can a general plumber fit it? Parts also seem hard to locate - one plumber estimating 10 days! Does machine require a Jackel product. And finally, most importantly, what's a good price on the parts. Thanks if anyone can weigh in with advice.