Overview
Both Baxi (Lancashire) and Ideal (Hull) are British manufacturers competing in the mid-market. They offer broadly similar price points and target homeowners who want good quality without paying Worcester Bosch or Vaillant prices.
Warranty
Baxi 800: up to 10 years. Ideal Logic Max: 10 years standard (no special installer accreditation required). Ideal wins — the 10-year warranty is given as standard, not conditional on using a specific installer tier.
Efficiency
Baxi 800: 93% efficiency. Ideal Logic Max: 94%. Very close; Ideal marginally better.
Reliability
Both brands have similar reliability records. Baxi has a marginally better long-term track record in independent surveys. Neither brand has a significant reliability problem.
Parts availability
Both brands have good UK parts networks. Baxi has a slight edge with more engineers carrying Baxi-specific parts. Practically, this difference is minor.
Price
Very similar pricing — within £50–£100 of each other for equivalent output. Effectively equal.
Controls
Both offer modern controls and smart thermostat compatibility. Baxi's EcoBlue system has good reviews; Ideal's iSense interface is clean and user-friendly.
Verdict
Ideal Logic Max edges it on warranty terms. Baxi 800 is a strong alternative — particularly if your engineer has more experience with Baxi. Either is a solid mid-market choice.