The offenders, who were wearing white surgical masks, fled from the house in Hertford Court, Little Billing, Northampton and made off towards Conyngham Road.
Both offenders were white with dark hair. One is described as having a slim build and was wearing a dark tracksuit. The other was slightly shorter with a chubby build, aged 25-30 and wore light-coloured trousers and a dark top.
Police would like to speak to anyone who may have witnessed the burglary, which happened on Tuesday, February 9 at about 8pm, or who may have any information about it.
Witnesses or anyone who saw anyone acting suspiciously in the area can contact police on 101 or Crimestoppers anonymously on 0800 111 555. Alternatively, they can use the anonymous online for at www.crimestoppers-uk.org