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Should I stock a spare igniter and flame sensor for my Knight Boiler?
I've got a Knight KB80 that's provided great service for about 10 years. However, I live almost 3 hours from the closest place that might have spare parts (Albuquerque), and I'm not sure anyone is stocking Knight parts there.Winter overnight lows are routinely in the negative teens (°F), and as low as -35°. On the other hand, the house is rammed earth, so it does have huge thermal mass and the hydronic system has glycol, so there's no risk of freezing.
The other slightly complicating factor is that I'm burning raw (unprocessed) well-head gas. I checked with Lochinvar before using the gas and they OK'ed it based on the gas analysis I sent. I've cleaned the sensor and igniter every year and there's no substantial buildup - just light surface deposits that I suspect occur with "normal" gas.
Given our remoteness I tend to keep spare parts on hand. Am I being paranoid to keep a spare igniter and sensor sitting around? Or are there other parts I should worry about more?