Personal tax allowances - Mariied pensioners?

My wife and I are retired and in our 60's. My two company and state pensions put me on the limit before being taxed. My wife's pension is half her personal allowance. We've just began renting out our home while we spend time travelling around family. Can you advise if the rental income can be claimed wholly against wife's personal allowance, and if so, will this impact on my pension with regrds to tax in any way? Thank you in advance.