Thanks for responding. I took the aerator off, and still the pressure was low. The water has never flowed fast out of the hot water dispenser, so I can't say for sure that its pressure is low, but it does sputter some after I've run it for about 1 minute. I'm really baffled that both the hot and cold have low pressure. Any other ideas?

What type of faucet? How old is the condo? Highrise? Townhouse?

We are getting a new kitchen (actually moving the kitchen) and i suspect the low water pressure we are experiencing now will not improve. We now have a grohe sprayer faucet and it dribbles when i engage it - not a very strong spray and i suspect its because of the low water pressure in the house. Can anyone recommend a kitchen faucet with sprayer that works well even with low water pressure? I'm looking at pulldowns mostly. Thanks!

Thank you both so much for sharing your knowledge. Randy427: I would have thought our units were enough to run only two hot water outlets at the same time but the Rinnai RL94 significantly reduces hot water flow from the sink when the HE washing machine is running. The Noritz significantly reduces hot water flow from the shower when the bathroom sink faucet is turned on. Aliceinwonderland: We are in Southern California and I have wondered about scale deposits but it seems odd that it would begin affecting both water heaters at exactly the same time. The 3 year old Rinnai manual says that it does not need to be flushed if using a scale inhibitor. The 10 year old Noritz was installed before we owned the home and doesn't have a valve to flush (not sure why not). We had a plumber come to look at it about a year ago and he said his maintenance procedure was just to clean out the dust and dirt that might have accumulated under the cover.