There was a thread about substituting a Grainger number 4NJG6 is 6 inches long compared to the required 5 inches for this model. Just wanted to point that out. I have found that 4NJG4 is a 5" 300 watt model of the correct size. No matter to me though as I exhausted every possible way to get a new igniter on the cheap , I found that I could buy 5 of them for under 30 bucks shipping free from China on Ebay. Anyone wants a link let me know. You have to know your specs to find it and as mentioned in that previous post on the matter, they are properly called "heater cartridges". BTW, my original igniter lasted 7 years.
Also while I think of it, if you are an ECO-45 owner, (others also perhaps) You may have had your blower fan take to squealing , and oiling it doesn't last very long. My fan was starting to really having a problem spooling up and I was worried it would burn out, so drastic action. If you take the end off the motor, you will see a sealed bearing. They tell you it needs no grease because it is sealed. Wrong. Pry the seal off with a very sharp dental pick ,try not to destroy it. It will be bone dry so add some grease-I used wheel bearing grease. No problems since even though the bearing had play and could use replacement,if you can get it off the shaft. The bearing is : NMB 627s - Thailand. -easy to find. But the grease treatment worked well and I think it is quieter than when it was new.
Also while I think of it, if you are an ECO-45 owner, (others also perhaps) You may have had your blower fan take to squealing , and oiling it doesn't last very long. My fan was starting to really having a problem spooling up and I was worried it would burn out, so drastic action. If you take the end off the motor, you will see a sealed bearing. They tell you it needs no grease because it is sealed. Wrong. Pry the seal off with a very sharp dental pick ,try not to destroy it. It will be bone dry so add some grease-I used wheel bearing grease. No problems since even though the bearing had play and could use replacement,if you can get it off the shaft. The bearing is : NMB 627s - Thailand. -easy to find. But the grease treatment worked well and I think it is quieter than when it was new.