Calgary - Some residents of Ranchlands say they have been hearing some strange noises in their community.

"It's almost like a giant refrigerator just getting louder and louder and louder," says Dana Negrey, a resident of the northwest neighbourhood. "Our neighbours on both sides have commented [on hearing the noise] and done their own pursuits to a degree...one neighbour, in fact, thought I was out at 4 a.m. with a leaf blower.'

Negrey says he first heard the noise last summer. He has a sound-proof recording room in his basement and recorded the sound several times since.

Negrey has gone to his alderman in hopes of solving the mystery.

"I understand Enmax came out and put measuring equipment on the lines. There were new meters installed, meters were checked, service lines were checked, furnaces were checked, heating systems were checked," says Alderman, Gord Lowe.

Negrey has also enlisted his community association to help find the source of the noise. The association's president says so far they have only been able to eliminate possibilities. "That's the process this whole thing is on right now...let's just keep looking and...if it's ruled out okay, that's fine, then let's find something else," says Terry Avramenko.

So far, nobody has been able to figure out what is causing the sound or where it is coming from.