Honeywell ST6400C Programmer Reviews

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3.7 stars
Average rating for this product is: 3.7 out of 5

From 1 rating and 2 reviews

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Average Ratings for Honeywell ST6400C Programmer

  • Ease of Use3 stars
  • Durability3 stars
  • Style4 stars
  • Service & Support3 stars
  • Value for Money3 stars
  • Reviewer Ratings3 stars
  • Overall Rating3.7 stars

2 Reviews For Honeywell ST6400C Programmer

  • Guest 20th Sep 2009

    Reviewer rating: 1 stars


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    You can change the original factory timings on the honeywell st6400c for water heating and central heating, but it doesn't make any difference. It shows the new settings, but turns the boiler on and off according to the original ones! Hopeless.

  • davidfthorn Rank: Staff Sergeant 25th May 2007

    Reviewer rating: 5 stars


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    The Honeywell ST6400C programmer for central heating and hot water systems is excellent.

    Offers a digital clock which keeps the time during power outages, less used buttons are hidden behind a flap. We have found it easy to program and use. Can use up to 3 on/off cycles per day and different setting for weekends.

    We have been using for about 4 years without a problem, until I recently broke the flap at the hinge. I e-mailed Honeywell, they responded within 24 hours and the next day a new f ...