Pop in a pod and choose one of three serving sizes.
That’s all there is to it. There are no bells, no whistles and no fancy display panels. They don’t even have a large water reservoir (just 48 oz).
But are these two models exactly the same?
There’s actually just one difference between the K40 and K45.
Do you know what it is?
This is The Coffee Maven’s Keurig K40 vs K45 Showdown.
Keurig K40 vs K45: The Comparison
Keurig K40 vs K45: The Differences
The Keurig K45 comes with a water filter starter kit. The Keurig K40 doesn’t.
That’s the difference.
Whether you need a water filter is dependent upon your water source. If you use tap water, you really should use the Keurig water filter kit to remove ions from the water, which would otherwise build up on the brewer’s internal components as limescale.
Related Side-by-Side Showdowns
If you use Brita, Purr or another water filter to fill your Keurig, you don’t need the water filter.
Water filter starter kits go for about $12 (as of this writing), so factor that into your decision if you decide you need one and want t to purchase the K40. I’ve seen times where the K45 (with the water filter) is actually less expensive than the K40, so make sure to price shop and get the best deal possible!
Which Model Is Right For You?
Choose the Keurig K40 if you fill you Keurig with filtered water, such as that from a Brita or Purr water filter unit. Because this model doesn’t come with a water filter, the included filter with the K45 would be redundant. Of course, if you can get the K45 for less than the K40, that’s a no-brainer.
Choose the Keurig K45 if you don’t have another means of filtering your water and would like the included water filter starter kit. This kit goes for about $12 sold separately, though, so don’t pay more than $12 for the K45 versus the K40. Otherwise you’d be better off buying the K40 and the water filter starter kit separately.
If these models don’t look right for you, download our FREE sortable guide to every single Keurig model and find one that does.