Billy we use a gas powered collector but we also carry an Abatement 2500 for apartments or for homes or businesses that are a distance away. It works really well for being electric, of course you are only a few feet away so that helps. Abatement makes good products.
I used it for 5 years when I was in the chimney cleaning business. It is a good system with high quality equipment. The portable is very powerful. The good thing is you can buy only what you want in the packages. I always just used the manual brushes instead of the powered along with the high pressure air whip. It cleaned great. I give it two thumbs up.
It's actually got really good suction that close to the system.
We bought it for a bunch of apartments we did at a retirement community and while the gas fired collector has so much more suction, it needs to because it's usually 100-ft away.